chore: default selector labels to differentiate dataservice and gateway

Author: sk-portkey

charts/portkey-gateway/values.yaml

@@ -354,7 +354,8 @@ dataservice:
     replicas: 1
     # terminationGracePeriodSeconds: 30
     labels: {}
-    selectorLabels: {}
+    selectorLabels:
+      app.kubernetes.io/name: gateway-dataservice
     annotations: {}
     podSecurityContext: {}
     securityContext: {}