Update examples to use Stackdriver Monitoring Full scope

[horiagunica]

Is your feature request related to a problem?

Current examples include only write permissions and that causes issues with reading the custom metrics and impacts autoscale examples.

Describe the solution you'd like

Update examples with appropriate scope update:

  scopes = [
    "https://www.googleapis.com/auth/compute.readonly",
    "https://www.googleapis.com/auth/cloud.useraccounts.readonly",
    "https://www.googleapis.com/auth/devstorage.read_only",
    "https://www.googleapis.com/auth/logging.write",
    "https://www.googleapis.com/auth/monitoring.write", - > "https://www.googleapis.com/auth/monitoring",
  ]

Describe alternatives you've considered.

No response

Additional context

No response