Fix which helm is being used for gcp deploy

ci_gcp/gitlab-ci.yaml

@@ -56,7 +56,7 @@ gstest deploy client:
     - echo $HOME
     - ls ~/.kube || echo "Nope"
     - ls ~/.config || echo "Nope"
-    - helm list --kubeconfig /root/.kube/config
+    - helm_for_gcp list --kubeconfig /root/.kube/config
     # namespace names are the same as domain names
     - helm_for_gcp upgrade -v 2 --kubeconfig /root/.kube/config --install --namespace $ns -f values-client.yaml geosphere-client geosphere-client/
   dependencies: