Fix gcp_compute_snapshot module to work with customer-supplied encryption key

[samyray]

SUMMARY

Fixes missing field for a customer-supplied encryption key which prevents this module from creating a snapshot

ISSUE TYPE

• Bugfix Pull Request

COMPONENT NAME

Module gcp_compute_snapshot

ADDITIONAL INFORMATION

Before change:

TASK [gcp : create a snapshot] ***********************************************************************************************
Thursday 18 November 2021  12:23:39 -0500 (0:00:00.062)       0:00:13.518 *****
failed: [test-example-> 127.0.0.1] (item=test-example) => {"ansible_loop_var": "volume_create_item", "changed": false, "msg": "GCP returned error: {'error': {'code': 400, 'message': \"'projects/********/zones/********/disks/test-example' is protected with a customer supplied encryption key, but none was provided.\", 'errors': [{'message': \"'projects/********/zones/********/disks/test-example' is protected with a customer supplied encryption key, but none was provided.\", 'domain': 'global', 'reason': 'resourceIsEncryptedWithCustomerEncryptionKey'}]}}",}

After change:

TASK [gcpr : create a snapshot] ***********************************************************************************************
Thursday 18 November 2021  12:26:18 -0500 (0:00:00.066)       0:00:14.092 *****
changed: [test-example -> 127.0.0.1] => (item=test-example)

[arloginov]

Just want to check if there is any chance this pull request will be merged?
It is affecting our environment as well