vty/cfg: add missing write-back of inter-BSC and inter-MSC HO config

Add missing 'show running-config' test to test_neighbor_ident.vty transcript
test.

Change-Id: Ie3b084e169da9509b37f6ab91ade79440c1b36d2
diff --git a/src/libmsc/msc_vty.c b/src/libmsc/msc_vty.c
index a3237cd..2990735 100644
--- a/src/libmsc/msc_vty.c
+++ b/src/libmsc/msc_vty.c
@@ -606,6 +606,8 @@
 	ranap_iu_vty_config_write(vty, " ");
 #endif
 
+	neighbor_ident_vty_write(vty);
+
 	return CMD_SUCCESS;
 }