vici: Include configured local and remote ports in list-conns

Closes strongswan/strongswan#2869

src/libcharon/plugins/vici/README.md

@@ -882,6 +882,8 @@ _list-conns_ command.
 			remote_addrs = [
 				<list of valid remote IKE endpoint addresses>
 			]
+			local_port = <local IKE endpoint port>
+			remote_port = <remote IKE endpoint port>
 			version = <IKE version as string, IKEv1|IKEv2 or 0 for any>
 			reauth_time = <IKE_SA reauthentication interval in seconds>
 			rekey_time = <IKE_SA rekeying interval in seconds>

src/libcharon/plugins/vici/vici_query.c

@@ -956,6 +956,11 @@ CALLBACK(list_conns, vici_message_t*,
 		tokens->destroy(tokens);
 		b->end_list(b);
 
+		b->add_kv(b, "local_port", "%u",
+				  ike_cfg->get_my_port(ike_cfg));
+		b->add_kv(b, "remote_port", "%u",
+				  ike_cfg->get_other_port(ike_cfg));
+
 		b->add_kv(b, "version", "%N", ike_version_names,
 			peer_cfg->get_ike_version(peer_cfg));
 		b->add_kv(b, "reauth_time", "%u",