Enhance missing suboptions for disk_encryption_key and source_snapsho…

[ua6Iiji6]

…t_encryption_key of module gcp_compute_region_disk.py

SUMMARY

Adding options for CMEK of regional disks

ISSUE TYPE

• Feature Pull Request

COMPONENT NAME

gcp_compute_region_disk

ADDITIONAL INFORMATION

[toumorokoshi]

The changes look good!

Can you add some testing around this feature? If there's a test I can run to verify (modifying the existing compute_region_disk test is fine), then I'm happy to merge.

https://github.com/ansible-collections/google.cloud/blob/master/CONTRIBUTING.md

[ua6Iiji6]

Hi, i was checking the collection, there are no tests implemented for CMEK in the whole collection allthough its already in use. If there would be a blueprint i could transfer it to regional disk. But i'am not able to write these test from scratch for you. I'm very sorry.

[toumorokoshi]

Does the key need to be CMEK? There's tests for a KMS Crypto Key resource: https://github.com/ansible-collections/google.cloud/blob/master/tests/integration/targets/gcp_kms_crypto_key/tasks/autogen.yml.

Regardless if you don't have the bandwidth, it's not an issue. I'll this PR parked in case someone has time.