Load Balancer - Delete backend buckets

If a bucket was deleted it doesn’t mean that appropriate backend buckets were deleted. The policy allow to delete backend buckets by the name of non-existing bucket.

policies:
  - name: gcp-loadbalancer-backend-buckets-delete
    resource: gcp.loadbalancer-backend-bucket
    filters:
      - type: value
        key: bucketName
        op: eq
        value: custodian-bucket-0
    actions:
      - type: delete