tests: Fix VTY results after switch to newer libosmo-mgcp-client

In this case we are fine with simply updating test result because anyway
ABI breakage in some libosmo-mgcp-client structs was needed, so new
versions of osmo-msc will require new versions of libosmo-mgcp-client.

Change-Id: I1fbdb95f71d3b9a2dc88e1ba79892ae16485aa99
diff --git a/tests/test_nodes.vty b/tests/test_nodes.vty
index d389675..7337cd9 100644
--- a/tests/test_nodes.vty
+++ b/tests/test_nodes.vty
@@ -72,9 +72,9 @@
   neighbor (a|iu) cgi <0-999> <0-999> <0-65535> <0-65535> (ran-pc|msc-ipa-name) RAN_PC_OR_MSC_IPA_NAME
   no neighbor (a|iu) (ran-pc|msc-ipa-name) RAN_PC_OR_MSC_IPA_NAME
   timer [(vlr|mgw|mncc|sccp|geran|utran|sgs)] [TNNNN] [(<0-2147483647>|default)]
-  mgw local-ip A.B.C.D
+  mgw local-ip (A.B.C.D|X:X::X:X)
   mgw local-port <0-65535>
-  mgw remote-ip A.B.C.D
+  mgw remote-ip (A.B.C.D|X:X::X:X)
   mgw remote-port <0-65535>
 ...