* Fix disk type’Malformed URL’ error
The API expects the disk type to be a SelfLink URL, but the disk type
name was being used (e.g. “pd-ssd”).
* Add ACC Tests for boot disk type
* Fix acceptance test & fmt test config
The Instance data does not contain the actual disk type, just "PERSISTENT". This commit uses the computeClient to pull the disk data from the API, allowing checking of the disk type.
Also fmt'd the test configuration.
* update compute instance docs to use new boot and scratch disk attributes, document attached_disk
* Update compute instance tests to mostly use new boot and scratch disk attributes
* Fix encryption test by setting values in state from what was there before
* Add scratch_disk property to google_compute_instance
* docs for scratch_disk
* limit scope of scratchDisks array by using bool, test formatting
* add slash back to disk check
* Add boot_disk property to google_compute_instance
* docs for boot_disk
* limit scope of bootDisk, use bool instead
* test formatting
* make device_name forcenew, add sha256 encryption key
