cosmetic: msc_vlr_tests: enable CC logging in debug

There are a number of bad failures in CC teardown handling we're solving. It
helps to see CC logging in the msc_vlr_tests.

Change-Id: I56ac269d46b48b6b85efad81c4d2343bfc41ea90
diff --git a/tests/msc_vlr/msc_vlr_test_reject_concurrency.err b/tests/msc_vlr/msc_vlr_test_reject_concurrency.err
index 66f40ce..8e07154 100644
--- a/tests/msc_vlr/msc_vlr_test_reject_concurrency.err
+++ b/tests/msc_vlr/msc_vlr_test_reject_concurrency.err
@@ -1278,6 +1278,7 @@
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_NEW}: state_chg to SUBSCR_CONN_S_ACCEPTED
 DPAG Paging success for MSISDN:46071 (event=0)
 DPAG Calling paging cbfn.
+DCC (ti 00 sub MSISDN:46071 callref 40000001) New transaction
 DREF VLR subscr MSISDN:46071 usage increases to: 6
 DREF MSISDN:46071: MSC conn use + trans_sms == 3 (0x15)
 DMSC msc_tx 91 bytes to MSISDN:46071 via RAN_GERAN_A
@@ -1505,6 +1506,7 @@
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_NEW}: state_chg to SUBSCR_CONN_S_ACCEPTED
 DPAG Paging success for MSISDN:46071 (event=0)
 DPAG Calling paging cbfn.
+DCC (ti 00 sub MSISDN:46071 callref 40000002) New transaction
 DREF VLR subscr MSISDN:46071 usage increases to: 6
 DREF MSISDN:46071: MSC conn use + trans_sms == 3 (0x15)
 DMSC msc_tx 91 bytes to MSISDN:46071 via RAN_GERAN_A
@@ -1749,6 +1751,7 @@
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_NEW}: state_chg to SUBSCR_CONN_S_ACCEPTED
 DPAG Paging success for MSISDN:46071 (event=0)
 DPAG Calling paging cbfn.
+DCC (ti 00 sub MSISDN:46071 callref 40000003) New transaction
 DREF VLR subscr MSISDN:46071 usage increases to: 6
 DREF MSISDN:46071: MSC conn use + trans_sms == 3 (0x15)
 DMSC msc_tx 91 bytes to MSISDN:46071 via RAN_GERAN_A