KAZOO-3773: Adding loose_route check before sending NOTIFY to remove Route: headers and other such routing information and process it properly.

kamailio/default.cfg

@@ -351,6 +351,10 @@ route[HANDLE_NOTIFY]
 {
     if (is_method("NOTIFY")) {
         if (isflagset(FLAG_INTERNALLY_SOURCED)) {
+            if (loose_route()) {
+                xlog("L_INFO", "$ci|log|Able to loose-route. Cool beans!");
+            }
+
             if (registered("location")) {
                 lookup("location");
                 xlog("L_INFO", "$ci|log|routing to $ruid");