log, cosmetic: add "RR" to "Ciphering Mode Complete"

Distinguish the enclosed DTAP RR Ciphering Mode Complete message from the outer
BSSMAP Cipher Mode Complete message in the DEBUG log.

Change-Id: I80c69b491e2ddb932bc4295a01caaf6a903b1fe4
diff --git a/tests/msc_vlr/msc_vlr_test_gsm_ciph.err b/tests/msc_vlr/msc_vlr_test_gsm_ciph.err
index 7b9970d..4585e0f 100644
--- a/tests/msc_vlr/msc_vlr_test_gsm_ciph.err
+++ b/tests/msc_vlr/msc_vlr_test_gsm_ciph.err
@@ -1785,7 +1785,7 @@
 DVLR upd_hlr_vlr_fsm(IMSI-901700000004620:GERAN-A:LU){UPD_HLR_VLR_S_INIT}: state_chg to UPD_HLR_VLR_S_WAIT_FOR_DATA
 DBSSAP msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN decode: DTAP
 DRLL msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: Dispatching 04.08 message: RR GSM48_MT_RR_CIPH_M_COMPL
-DBSSAP msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: Ciphering Mode Complete contains Mobile Identity: IMEI-SV-4234234234234275F
+DBSSAP msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RR Ciphering Mode Complete contains Mobile Identity: IMEI-SV-4234234234234275F
 DVLR set IMEISV on subscriber; IMSI=901700000004620 IMEISV=4234234234234275
 DVLR set IMEI on subscriber; IMSI=901700000004620 IMEI=42342342342342
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_HLR_UPD}: Received Event VLR_ULA_E_ID_IMEISV