Comment 1 for bug 1690413

Google has enabled additional regions as of July 28, 2017:

$ gcloud compute regions list
NAME CPUS DISKS_GB ADDRESSES RESERVED_ADDRESSES STATUS TURNDOWN_DATE
asia-east1 0/600 0/102400 0/575 0/175 UP
asia-northeast1 0/24 0/20480 0/23 0/8 UP
asia-southeast1 0/24 0/20480 0/23 0/8 UP
australia-southeast1 0/24 0/20480 0/23 0/8 UP
europe-west1 0/600 0/102400 0/575 0/175 UP
europe-west2 0/24 0/20480 0/23 0/8 UP
us-central1 1/600 200/102400 1/575 0/175 UP
us-east1 0/600 0/102400 0/575 0/175 UP
us-east4 0/24 0/20480 0/23 0/8 UP
us-west1 0/24 0/20480 0/23 0/8 UP

With juju 2.2.2, I can see 8 of these regions:

$ juju version
2.2.2-xenial-amd64

$ juju show-cloud google
defined: public
type: gce
description: Google Cloud Platform
auth-types: [jsonfile, oauth2]
regions:
  us-east1:
    endpoint: https://www.googleapis.com
  us-central1:
    endpoint: https://www.googleapis.com
  us-west1:
    endpoint: https://www.googleapis.com
  europe-west1:
    endpoint: https://www.googleapis.com
  asia-east1:
    endpoint: https://www.googleapis.com
  asia-northeast1:
    endpoint: https://www.googleapis.com
  asia-southeast1:
    endpoint: https://www.googleapis.com
  australia-southeast1:
    endpoint: https://www.googleapis.com