Added url rewrite for remote write endpoint for metrics

otc/penguin-observability.think-ahead.cloud/stacks/observability/victoria-k8s-stack/values.yaml

@@ -777,10 +777,10 @@ vmauth:
             - '/insert/elasticsearch/.*'
           url_prefix:
             - 'http://vlogs-victorialogs:9428'
-        # - src_paths:
-        #     - '{{ .vm.write.path }}/.*'
-        #   url_prefix:
-        #     - '{{ urlJoin (omit .vm.write "path") }}/'       
+        - src_paths:
+            - '/api/v1/write/.*'
+          url_prefix:
+            - 'http://vmsingle-victoria-k8s-stack-victoria-metrics-k8s-stack:8428'  
 
 vmagent:
   # -- Create VMAgent CR