vlr_sgs: Drop recorded LastEutranPlmnId when UE no longer associated

Change-Id: I0dcb1850ab4f6f7d42bfcb19665ddeae2d3b057a
diff --git a/tests/msc_vlr/msc_vlr_test_gsm_authen.err b/tests/msc_vlr/msc_vlr_test_gsm_authen.err
index f27d826..042bfca 100644
--- a/tests/msc_vlr/msc_vlr_test_gsm_authen.err
+++ b/tests/msc_vlr/msc_vlr_test_gsm_authen.err
@@ -27,6 +27,7 @@
 DMSC msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_VALIDATE_L3}: Received Event MSC_A_EV_COMPLETE_LAYER_3_OK
 DMSC msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_VALIDATE_L3}: state_chg to MSC_A_ST_AUTH_CIPH
 DREF VLR subscr IMSI-901700000004620 - _lu_fsm_associate_vsub: now used by 1 (active-conn)
+DVLR set Last E-UTRAN PLMN ID on subscriber: (none)
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_node1_pre()
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_node1()
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: state_chg to VLR_ULA_S_WAIT_AUTH
@@ -547,6 +548,7 @@
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + active-conn: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + vlr_subscr_cancel_attach_fsm: now used by 4 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn,vlr_subscr_cancel_attach_fsm)
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 - vlr_subscr_cancel_attach_fsm: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
+DVLR set Last E-UTRAN PLMN ID on subscriber: (none)
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 - attached: now used by 2 (gsm48_rx_mm_imsi_detach_ind,active-conn)
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 - gsm48_rx_mm_imsi_detach_ind: now used by 1 (active-conn)
 DMSC msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Received Event MSC_A_EV_CN_CLOSE
@@ -614,6 +616,7 @@
 DMSC msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_VALIDATE_L3}: Received Event MSC_A_EV_COMPLETE_LAYER_3_OK
 DMSC msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_VALIDATE_L3}: state_chg to MSC_A_ST_AUTH_CIPH
 DREF VLR subscr IMSI-901700000004620 - _lu_fsm_associate_vsub: now used by 1 (active-conn)
+DVLR set Last E-UTRAN PLMN ID on subscriber: (none)
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_node1_pre()
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_node1()
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: state_chg to VLR_ULA_S_WAIT_AUTH
@@ -1189,6 +1192,7 @@
 DMSC msc_a(IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100:GERAN-A:LU){MSC_A_ST_VALIDATE_L3}: Received Event MSC_A_EV_COMPLETE_LAYER_3_OK
 DMSC msc_a(IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100:GERAN-A:LU){MSC_A_ST_VALIDATE_L3}: state_chg to MSC_A_ST_AUTH_CIPH
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100 - _lu_fsm_associate_vsub: now used by 2 (attached,active-conn)
+DVLR set Last E-UTRAN PLMN ID on subscriber: (none)
 DVLR vlr_lu_fsm(IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_node1_pre()
 DVLR vlr_lu_fsm(IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_node1()
 DVLR vlr_lu_fsm(IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100:GERAN-A:LU){VLR_ULA_S_IDLE}: state_chg to VLR_ULA_S_WAIT_AUTH
@@ -1375,6 +1379,7 @@
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071:TMSI-0x07060504 + active-conn: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071:TMSI-0x07060504 + vlr_subscr_cancel_attach_fsm: now used by 4 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn,vlr_subscr_cancel_attach_fsm)
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071:TMSI-0x07060504 - vlr_subscr_cancel_attach_fsm: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
+DVLR set Last E-UTRAN PLMN ID on subscriber: (none)
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071:TMSI-0x07060504 - attached: now used by 2 (gsm48_rx_mm_imsi_detach_ind,active-conn)
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071:TMSI-0x07060504 - gsm48_rx_mm_imsi_detach_ind: now used by 1 (active-conn)
 DMSC msc_a(IMSI-901700000004620:MSISDN-46071:TMSI-0x07060504:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Received Event MSC_A_EV_CN_CLOSE
@@ -1442,6 +1447,7 @@
 DMSC msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_VALIDATE_L3}: Received Event MSC_A_EV_COMPLETE_LAYER_3_OK
 DMSC msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_VALIDATE_L3}: state_chg to MSC_A_ST_AUTH_CIPH
 DREF VLR subscr IMSI-901700000004620 - _lu_fsm_associate_vsub: now used by 1 (active-conn)
+DVLR set Last E-UTRAN PLMN ID on subscriber: (none)
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_node1_pre()
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_node1()
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: state_chg to VLR_ULA_S_WAIT_AUTH
@@ -1686,6 +1692,7 @@
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + active-conn: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + vlr_subscr_cancel_attach_fsm: now used by 4 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn,vlr_subscr_cancel_attach_fsm)
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 - vlr_subscr_cancel_attach_fsm: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
+DVLR set Last E-UTRAN PLMN ID on subscriber: (none)
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 - attached: now used by 2 (gsm48_rx_mm_imsi_detach_ind,active-conn)
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 - gsm48_rx_mm_imsi_detach_ind: now used by 1 (active-conn)
 DMSC msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Received Event MSC_A_EV_CN_CLOSE
@@ -1753,6 +1760,7 @@
 DMSC msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_VALIDATE_L3}: Received Event MSC_A_EV_COMPLETE_LAYER_3_OK
 DMSC msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_VALIDATE_L3}: state_chg to MSC_A_ST_AUTH_CIPH
 DREF VLR subscr IMSI-901700000004620 - _lu_fsm_associate_vsub: now used by 1 (active-conn)
+DVLR set Last E-UTRAN PLMN ID on subscriber: (none)
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_node1_pre()
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_node1()
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: state_chg to VLR_ULA_S_WAIT_AUTH
@@ -2017,6 +2025,7 @@
 DMSC msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_VALIDATE_L3}: Received Event MSC_A_EV_COMPLETE_LAYER_3_OK
 DMSC msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_VALIDATE_L3}: state_chg to MSC_A_ST_AUTH_CIPH
 DREF VLR subscr IMSI-901700000004620 - _lu_fsm_associate_vsub: now used by 1 (active-conn)
+DVLR set Last E-UTRAN PLMN ID on subscriber: (none)
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_node1_pre()
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_node1()
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: state_chg to VLR_ULA_S_WAIT_AUTH
@@ -2282,6 +2291,7 @@
 DMSC msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_VALIDATE_L3}: Received Event MSC_A_EV_COMPLETE_LAYER_3_OK
 DMSC msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_VALIDATE_L3}: state_chg to MSC_A_ST_AUTH_CIPH
 DREF VLR subscr IMSI-901700000004620 - _lu_fsm_associate_vsub: now used by 1 (active-conn)
+DVLR set Last E-UTRAN PLMN ID on subscriber: (none)
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_node1_pre()
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_node1()
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: state_chg to VLR_ULA_S_WAIT_AUTH
@@ -2567,6 +2577,7 @@
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100 + active-conn: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100 + vlr_subscr_cancel_attach_fsm: now used by 4 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn,vlr_subscr_cancel_attach_fsm)
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100 - vlr_subscr_cancel_attach_fsm: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
+DVLR set Last E-UTRAN PLMN ID on subscriber: (none)
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100 - attached: now used by 2 (gsm48_rx_mm_imsi_detach_ind,active-conn)
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100 - gsm48_rx_mm_imsi_detach_ind: now used by 1 (active-conn)
 DMSC msc_a(IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Received Event MSC_A_EV_CN_CLOSE
@@ -2634,6 +2645,7 @@
 DMSC msc_a(IMSI-901700000010650:GERAN-A:LU){MSC_A_ST_VALIDATE_L3}: Received Event MSC_A_EV_COMPLETE_LAYER_3_OK
 DMSC msc_a(IMSI-901700000010650:GERAN-A:LU){MSC_A_ST_VALIDATE_L3}: state_chg to MSC_A_ST_AUTH_CIPH
 DREF VLR subscr IMSI-901700000010650 - _lu_fsm_associate_vsub: now used by 1 (active-conn)
+DVLR set Last E-UTRAN PLMN ID on subscriber: (none)
 DVLR vlr_lu_fsm(IMSI-901700000010650:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_node1_pre()
 DVLR vlr_lu_fsm(IMSI-901700000010650:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_node1()
 DVLR vlr_lu_fsm(IMSI-901700000010650:GERAN-A:LU){VLR_ULA_S_IDLE}: state_chg to VLR_ULA_S_WAIT_AUTH
@@ -3128,6 +3140,7 @@
 DREF VLR subscr IMSI-901700000010650:MSISDN-42342 + active-conn: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
 DREF VLR subscr IMSI-901700000010650:MSISDN-42342 + vlr_subscr_cancel_attach_fsm: now used by 4 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn,vlr_subscr_cancel_attach_fsm)
 DREF VLR subscr IMSI-901700000010650:MSISDN-42342 - vlr_subscr_cancel_attach_fsm: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
+DVLR set Last E-UTRAN PLMN ID on subscriber: (none)
 DREF VLR subscr IMSI-901700000010650:MSISDN-42342 - attached: now used by 2 (gsm48_rx_mm_imsi_detach_ind,active-conn)
 DREF VLR subscr IMSI-901700000010650:MSISDN-42342 - gsm48_rx_mm_imsi_detach_ind: now used by 1 (active-conn)
 DMSC msc_a(IMSI-901700000010650:MSISDN-42342:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Received Event MSC_A_EV_CN_CLOSE
@@ -3196,6 +3209,7 @@
 DMSC msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_VALIDATE_L3}: Received Event MSC_A_EV_COMPLETE_LAYER_3_OK
 DMSC msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_VALIDATE_L3}: state_chg to MSC_A_ST_AUTH_CIPH
 DREF VLR subscr IMSI-901700000004620 - _lu_fsm_associate_vsub: now used by 1 (active-conn)
+DVLR set Last E-UTRAN PLMN ID on subscriber: (none)
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_node1_pre()
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_node1()
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: state_chg to VLR_ULA_S_WAIT_AUTH