GOOGLE_COMPUTE_DISK_SNAPSHOT_URI must be set to a valid snapshot's uri like one of the output of
gcloud compute snapshots list --uri
GOOGLE_COMPUTE_DISK_SNAPSHOT_URI should be replaced by a proper snapshot made by TF (#11690)
* providers/google: add support for encrypting a disk
* providers/google: Add docs for encrypting disks
* providers/google: CSEK small fixes: sensitive params and mismatched state files
Supports configuring the disk type for Google Compute Engine disk
resources. Both `google_compute_disk` and `google_compute_instance`
disk types are supported.
Resolves#351.
Thomas Poindessous