tests/socket: add testcase test_get_ip_and_port

Check if osmo_sock_get_ip_and_port() works correct.

Change-Id: I4e69d814367168c05f0da161ec9b705db36ad096
diff --git a/tests/socket/socket_test.ok b/tests/socket/socket_test.ok
index 696e356..589036f 100644
--- a/tests/socket/socket_test.ok
+++ b/tests/socket/socket_test.ok
@@ -10,3 +10,5 @@
 Checking osmo_sock_init2(AF_UNSPEC) BIND + CONNECT on IPv4
 Checking osmo_sock_init2(AF_UNSPEC) BIND + CONNECT on IPv6
 Checking osmo_sock_init2(AF_UNSPEC) BIND on IPv4
+Checking test_get_ip_and_port() for combined BIND + CONNECT on IPv4
+Checking test_get_ip_and_port() for combined BIND + CONNECT on IPv6