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_no_authen.err b/tests/msc_vlr/msc_vlr_test_no_authen.err
index 4162ce0..5ccb5d4 100644
--- a/tests/msc_vlr/msc_vlr_test_no_authen.err
+++ b/tests/msc_vlr/msc_vlr_test_no_authen.err
@@ -238,6 +238,7 @@
 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
@@ -597,6 +598,7 @@
 DMM Subscr_Conn(50462976){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