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_authen_reuse.err b/tests/msc_vlr/msc_vlr_test_authen_reuse.err
index cda2bda..4f8432a 100644
--- a/tests/msc_vlr/msc_vlr_test_authen_reuse.err
+++ b/tests/msc_vlr/msc_vlr_test_authen_reuse.err
@@ -1,3 +1,6 @@
+full talloc report on 'msgb' (total      0 bytes in   1 blocks)
+talloc_total_blocks(tall_bsc_ctx) == 12
+
 ===== test_auth_use_twice_geran
 - Location Update request causes a GSUP Send Auth Info request to HLR
   MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
@@ -424,7 +427,7 @@
 ===== test_auth_use_twice_geran: 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_auth_use_twice_utran
 - Location Update request causes a GSUP Send Auth Info request to HLR
@@ -884,7 +887,7 @@
 ===== test_auth_use_twice_utran: 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_auth_use_infinitely_geran
 - Location Update request causes a GSUP Send Auth Info request to HLR
@@ -1405,7 +1408,7 @@
 ===== test_auth_use_infinitely_geran: 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_auth_use_infinitely_utran
 - Location Update request causes a GSUP Send Auth Info request to HLR
@@ -1968,7 +1971,7 @@
 ===== test_auth_use_infinitely_utran: 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_no_auth_reuse_geran
 - Location Update request causes a GSUP Send Auth Info request to HLR
@@ -2289,7 +2292,7 @@
 ===== test_no_auth_reuse_geran: 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_no_auth_reuse_utran
 - Location Update request causes a GSUP Send Auth Info request to HLR
@@ -2632,8 +2635,8 @@
 ===== test_no_auth_reuse_utran: 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