cluster/gcp/k8s:gke 
network - connection 
Connection Type: network/gcp/vpc
cluster_id - string 
The ID of the GKE (Google Kubernetes Engine) cluster.
Format: projects/[project]/locations/[zone]/clusters/[cluster_name]
cluster_name - string 
The name of the GKE (Google Kubernetes Engine) cluster.
cluster_endpoint - string 
The IP address of this cluster's Kubernetes master.
cluster_ca_certificate - string 
Base64-encoded public certificate used by clients to authenticate to the cluster endpoint.