Add Stackable vendor label to default values.yaml (#767)

Author: sbernauer

deploy/helm/zookeeper-operator/values.yaml

@@ -18,7 +18,8 @@ serviceAccount:
   name: ""
 
 # Provide additional labels which get attached to all deployed resources
-labels: {}
+labels:
+  stackable.tech/vendor: Stackable
 
 podAnnotations: {}