GCE bring-up: Differentiate NODE_TAGS from NODE_INSTANCE_PREFIX

Kubernetes-side fix to #29074 (GKE-side fix necessary as well)

cluster/common.sh

@@ -534,6 +534,7 @@ function build-kube-env {
 ENV_TIMESTAMP: $(yaml-quote $(date -u +%Y-%m-%dT%T%z))
 INSTANCE_PREFIX: $(yaml-quote ${INSTANCE_PREFIX})
 NODE_INSTANCE_PREFIX: $(yaml-quote ${NODE_INSTANCE_PREFIX})
+NODE_TAGS: $(yaml-quote ${NODE_TAGS:-})
 CLUSTER_IP_RANGE: $(yaml-quote ${CLUSTER_IP_RANGE:-10.244.0.0/16})
 SERVER_BINARY_TAR_URL: $(yaml-quote ${server_binary_tar_url})
 SERVER_BINARY_TAR_HASH: $(yaml-quote ${SERVER_BINARY_TAR_HASH})

cluster/gce/configure-vm.sh

@@ -422,6 +422,7 @@ function create-salt-pillar() {
   mkdir -p /srv/salt-overlay/pillar
   cat <<EOF >/srv/salt-overlay/pillar/cluster-params.sls
 instance_prefix: '$(echo "$INSTANCE_PREFIX" | sed -e "s/'/''/g")'
+node_tags: '$(echo "$NODE_TAGS" | sed -e "s/'/''/g")'
 node_instance_prefix: '$(echo "$NODE_INSTANCE_PREFIX" | sed -e "s/'/''/g")'
 cluster_cidr: '$(echo "$CLUSTER_IP_RANGE" | sed -e "s/'/''/g")'
 allocate_node_cidrs: '$(echo "$ALLOCATE_NODE_CIDRS" | sed -e "s/'/''/g")'
@@ -814,8 +815,13 @@ EOF
   fi
 
   if [[ -n "${NODE_INSTANCE_PREFIX:-}" ]]; then
+    if [[ -n "${NODE_TAGS:-}" ]]; then
+      local -r node_tags="${NODE_TAGS}"
+    else
+      local -r node_tags="${NODE_INSTANCE_PREFIX}"
+    fi
     cat <<EOF >>/etc/gce.conf
-node-tags = ${NODE_INSTANCE_PREFIX}
+node-tags = ${NODE_TAGS}
 node-instance-prefix = ${NODE_INSTANCE_PREFIX}
 EOF
     CLOUD_CONFIG=/etc/gce.conf

cluster/gce/gci/configure-helper.sh

@@ -189,8 +189,13 @@ EOF
   fi
   if [[ -n "${NODE_INSTANCE_PREFIX:-}" ]]; then
     use_cloud_config="true"
+    if [[ -n "${NODE_TAGS:-}" ]]; then
+      local -r node_tags="${NODE_TAGS}"
+    else
+      local -r node_tags="${NODE_INSTANCE_PREFIX}"
+    fi
     cat <<EOF >>/etc/gce.conf
-node-tags = ${NODE_INSTANCE_PREFIX}
+node-tags = ${node_tags}
 node-instance-prefix = ${NODE_INSTANCE_PREFIX}
 EOF
   fi

cluster/gce/trusty/configure-helper.sh

@@ -332,8 +332,13 @@ EOF
   fi
   if [ -n "${NODE_INSTANCE_PREFIX:-}" ]; then
     use_cloud_config="true"
+    if [[ -n "${NODE_TAGS:-}" ]]; then
+      local -r node_tags="${NODE_TAGS}"
+    else
+      local -r node_tags="${NODE_INSTANCE_PREFIX}"
+    fi
     cat <<EOF >>/etc/gce.conf
-node-tags = ${NODE_INSTANCE_PREFIX}
+node-tags = ${node_tags}
 node-instance-prefix = ${NODE_INSTANCE_PREFIX}
 EOF
   fi

cluster/gce/util.sh

@@ -83,6 +83,7 @@ if [[ "${ENABLE_CLUSTER_AUTOSCALER}" == "true" ]]; then
 fi
 
 NODE_INSTANCE_PREFIX="${INSTANCE_PREFIX}-minion"
+NODE_TAGS="${NODE_TAG}"
 
 ALLOCATE_NODE_CIDRS=true