KAZOO-5181: Fixed OPTION message drop from trusted IP when used TRAFFIC_FILTER_ROLE on kamailio (#116)

kamailio/default.cfg

@@ -377,7 +377,9 @@ route[HANDLE_OPTIONS]
             route(INTERNAL_TO_EXTERNAL_RELAY);
         } else {
             #!ifdef TRAFFIC_FILTER_ROLE
-            route(FILTER_REQUEST_DOMAIN);
+            if (!isflagset(FLAG_TRUSTED_SOURCE)) {
+                route(FILTER_REQUEST_DOMAIN);
+            }
             #!endif
 
             #!ifdef NAT_TRAVERSAL_ROLE
@@ -405,7 +407,9 @@ route[HANDLE_NOTIFY]
             route(INTERNAL_TO_EXTERNAL_RELAY);
         } else {
             #!ifdef TRAFFIC_FILTER_ROLE
-            route(FILTER_REQUEST_DOMAIN);
+            if (!isflagset(FLAG_TRUSTED_SOURCE)) {
+                route(FILTER_REQUEST_DOMAIN);
+            }
             #!endif
 
             #!ifdef WEBSOCKETS_ROLE