Disable component checks before calling gcloud

[briandealwis]

gcloud may check for component updates on virtually all calls, which imposes unnecessary latency. We can avoid these component checks by setting CLOUDSDK_COMPONENT_MANAGER_DISABLE_UPDATE_CHECK=1 in the environment before calling gcloud.

skaffold/pkg/skaffold/gcp/auth.go

Line 64 in e50fc5e

cmd := exec.Command("gcloud", "auth", "print-access-token", "--format=json")

skaffold/pkg/skaffold/docker/authenticators.go

Line 89 in e50fc5e

if auth, err := google.NewGcloudAuthenticator(); err == nil {

[louisjimenez]

I'll look into this.