Revert "Remove changes on SECONDARY_RANGE_NAME."

cluster/gce/config-test.sh

@@ -299,9 +299,11 @@ if [ ${ENABLE_IP_ALIASES} = true ]; then
   # Reserve the services IP space to avoid being allocated for other GCP resources.
   SERVICE_CLUSTER_IP_SUBNETWORK=${KUBE_GCE_SERVICE_CLUSTER_IP_SUBNETWORK:-${INSTANCE_PREFIX}-subnet-services}
   NODE_IPAM_MODE=${KUBE_GCE_NODE_IPAM_MODE:-CloudAllocator}
+  SECONDARY_RANGE_NAME=${SECONDARY_RANGE_NAME:-}
   # Add to the provider custom variables.
   PROVIDER_VARS="${PROVIDER_VARS:-} ENABLE_IP_ALIASES"
   PROVIDER_VARS="${PROVIDER_VARS:-} NODE_IPAM_MODE"
+  PROVIDER_VARS="${PROVIDER_VARS:-} SECONDARY_RANGE_NAME"
 fi
 
 # Enable GCE Alpha features.