Moved GCE and service account auth to an advanced section.
Moved GCE and service account auth to an advanced section.

janetkuo/marketplace-k8s-app-tools,GoogleCloudPlatform/marketplace-k8s-app-tools,cliveseldon/marketplace-k8s-app-tools,cliveseldon/marketplace-k8s-app-tools,cliveseldon/marketplace-k8s-app-tools,cliveseldon/marketplace-k8s-app-tools,GoogleCloudPlatform/marketplace-k8s-app-tools,janetkuo/marketplace-k8s-app-tools