make gsup ipa name configurable in osmo-msc.cfg

Add a 'ipa-name' VTY command which overrides the default IPA name
used by the MSC. This is a prerequisite for inter-MSC handover.

Related: OS#3355
Change-Id: I317d6c59f77e92fbb2b875a83dc0ec2fa5cb6006
diff --git a/tests/msc_vlr/msc_vlr_test_authen_reuse.err b/tests/msc_vlr/msc_vlr_test_authen_reuse.err
index ca035bf..8948421 100644
--- a/tests/msc_vlr/msc_vlr_test_authen_reuse.err
+++ b/tests/msc_vlr/msc_vlr_test_authen_reuse.err
@@ -1,5 +1,5 @@
 full talloc report on 'msgb' (total      0 bytes in   1 blocks)
-talloc_total_blocks(tall_bsc_ctx) == 12
+talloc_total_blocks(tall_bsc_ctx) == 13
 
 ===== test_auth_use_twice_geran
 - Location Update request causes a GSUP Send Auth Info request to HLR
@@ -410,7 +410,7 @@
 ===== test_auth_use_twice_geran: SUCCESS
 
 full talloc report on 'msgb' (total      0 bytes in   1 blocks)
-talloc_total_blocks(tall_bsc_ctx) == 12
+talloc_total_blocks(tall_bsc_ctx) == 13
 
 ===== test_auth_use_twice_utran
 - Location Update request causes a GSUP Send Auth Info request to HLR
@@ -859,7 +859,7 @@
 ===== test_auth_use_twice_utran: SUCCESS
 
 full talloc report on 'msgb' (total      0 bytes in   1 blocks)
-talloc_total_blocks(tall_bsc_ctx) == 12
+talloc_total_blocks(tall_bsc_ctx) == 13
 
 ===== test_auth_use_infinitely_geran
 - Location Update request causes a GSUP Send Auth Info request to HLR
@@ -1350,7 +1350,7 @@
 ===== test_auth_use_infinitely_geran: SUCCESS
 
 full talloc report on 'msgb' (total      0 bytes in   1 blocks)
-talloc_total_blocks(tall_bsc_ctx) == 12
+talloc_total_blocks(tall_bsc_ctx) == 13
 
 ===== test_auth_use_infinitely_utran
 - Location Update request causes a GSUP Send Auth Info request to HLR
@@ -1892,7 +1892,7 @@
 ===== test_auth_use_infinitely_utran: SUCCESS
 
 full talloc report on 'msgb' (total      0 bytes in   1 blocks)
-talloc_total_blocks(tall_bsc_ctx) == 12
+talloc_total_blocks(tall_bsc_ctx) == 13
 
 ===== test_no_auth_reuse_geran
 - Location Update request causes a GSUP Send Auth Info request to HLR
@@ -2209,7 +2209,7 @@
 ===== test_no_auth_reuse_geran: SUCCESS
 
 full talloc report on 'msgb' (total      0 bytes in   1 blocks)
-talloc_total_blocks(tall_bsc_ctx) == 12
+talloc_total_blocks(tall_bsc_ctx) == 13
 
 ===== test_no_auth_reuse_utran
 - Location Update request causes a GSUP Send Auth Info request to HLR
@@ -2551,8 +2551,8 @@
 ===== test_no_auth_reuse_utran: SUCCESS
 
 full talloc report on 'msgb' (total      0 bytes in   1 blocks)
-talloc_total_blocks(tall_bsc_ctx) == 12
+talloc_total_blocks(tall_bsc_ctx) == 13
 
 full talloc report on 'msgb' (total      0 bytes in   1 blocks)
-talloc_total_blocks(tall_bsc_ctx) == 12
+talloc_total_blocks(tall_bsc_ctx) == 13