Fixed cluster validation: added -q and project flags to gcloud.

cluster/validate-cluster.sh

@@ -56,8 +56,8 @@ if [[ "${KUBERNETES_PROVIDER:-}" == "gce" ]]; then
   echo "Validating gce cluster, MULTIZONE=${MULTIZONE:-}"
   # In multizone mode we need to add instances for all nodes in the region.
   if [[ "${MULTIZONE:-}" == "true" ]]; then
-    EXPECTED_NUM_NODES=$(gcloud compute instances list --format=[no-heading] --regexp="${NODE_INSTANCE_PREFIX}.*" \
-      --zones=$(gcloud compute zones list --filter=region=${REGION} --format=[no-heading]\(name\) | tr "\n" "," | sed  "s/,$//") | wc -l)
+    EXPECTED_NUM_NODES=$(gcloud -q compute instances list --project="${PROJECT}" --format=[no-heading] --regexp="${NODE_INSTANCE_PREFIX}.*" \
+      --zones=$(gcloud -q compute zones list --project="${PROJECT}" --filter=region=${REGION} --format=[no-heading]\(name\) | tr "\n" "," | sed  "s/,$//") | wc -l)
     echo "Computing number of nodes, NODE_INSTANCE_PREFIX=${NODE_INSTANCE_PREFIX}, REGION=${REGION}, EXPECTED_NUM_NODES=${EXPECTED_NUM_NODES}"
   fi
 fi