use osmo_init_logging2() with proper talloc ctx

Since the logging allocations now also show up in the root context report, some
tests need adjusted talloc checks.

In msc_vlr_tests, also output the number of talloc blocks before tests are
started to show that the number didn't change after the tests.

Change-Id: Iae07ae60230c7bab28e52b5df97fa3844778158e
diff --git a/tests/msc_vlr/msc_vlr_test_gsm_ciph.err b/tests/msc_vlr/msc_vlr_test_gsm_ciph.err
index 2d60ae9..b75ecc2 100644
--- a/tests/msc_vlr/msc_vlr_test_gsm_ciph.err
+++ b/tests/msc_vlr/msc_vlr_test_gsm_ciph.err
@@ -1,3 +1,6 @@
+full talloc report on 'msgb' (total      0 bytes in   1 blocks)
+talloc_total_blocks(tall_bsc_ctx) == 12
+
 ===== test_ciph
 - Location Update request causes a GSUP Send Auth Info request to HLR
   MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
@@ -493,7 +496,7 @@
 ===== test_ciph: SUCCESS
 
 full talloc report on 'msgb' (total      0 bytes in   1 blocks)
-talloc_total_blocks(tall_bsc_ctx) == 7
+talloc_total_blocks(tall_bsc_ctx) == 12
 
 ===== test_ciph_tmsi
 - Location Update request causes a GSUP Send Auth Info request to HLR
@@ -1027,7 +1030,7 @@
 ===== test_ciph_tmsi: SUCCESS
 
 full talloc report on 'msgb' (total      0 bytes in   1 blocks)
-talloc_total_blocks(tall_bsc_ctx) == 7
+talloc_total_blocks(tall_bsc_ctx) == 12
 
 ===== test_ciph_imei
 - Location Update request causes a GSUP Send Auth Info request to HLR
@@ -1251,7 +1254,7 @@
 ===== test_ciph_imei: SUCCESS
 
 full talloc report on 'msgb' (total      0 bytes in   1 blocks)
-talloc_total_blocks(tall_bsc_ctx) == 7
+talloc_total_blocks(tall_bsc_ctx) == 12
 
 ===== test_ciph_imeisv
 - Location Update request causes a GSUP Send Auth Info request to HLR
@@ -1464,7 +1467,7 @@
 ===== test_ciph_imeisv: SUCCESS
 
 full talloc report on 'msgb' (total      0 bytes in   1 blocks)
-talloc_total_blocks(tall_bsc_ctx) == 7
+talloc_total_blocks(tall_bsc_ctx) == 12
 
 ===== test_ciph_tmsi_imei
 - Location Update request causes a GSUP Send Auth Info request to HLR
@@ -1719,7 +1722,7 @@
 ===== test_ciph_tmsi_imei: SUCCESS
 
 full talloc report on 'msgb' (total      0 bytes in   1 blocks)
-talloc_total_blocks(tall_bsc_ctx) == 7
+talloc_total_blocks(tall_bsc_ctx) == 12
 
 ===== test_gsm_ciph_in_umts_env
 - Location Update request causes a GSUP Send Auth Info request to HLR
@@ -2185,7 +2188,7 @@
 ===== test_gsm_ciph_in_umts_env: SUCCESS
 
 full talloc report on 'msgb' (total      0 bytes in   1 blocks)
-talloc_total_blocks(tall_bsc_ctx) == 7
+talloc_total_blocks(tall_bsc_ctx) == 12
 
 ===== test_a5_3_not_supported
 - Location Update request causes a GSUP Send Auth Info request to HLR
@@ -2283,8 +2286,8 @@
 ===== test_a5_3_not_supported: SUCCESS
 
 full talloc report on 'msgb' (total      0 bytes in   1 blocks)
-talloc_total_blocks(tall_bsc_ctx) == 7
+talloc_total_blocks(tall_bsc_ctx) == 12
 
 full talloc report on 'msgb' (total      0 bytes in   1 blocks)
-talloc_total_blocks(tall_bsc_ctx) == 7
+talloc_total_blocks(tall_bsc_ctx) == 12