add support for enabling delete protection

[Curverneur]

Description

Add support for enabling the delete protection for instances (virtual machines) and volumes (disks).

Reason

This feature allows users to enable the delete protection for certain resources to prevent accidental deletion.

References

• Blog: https://www.shapeblue.com/delete-protection-for-instances-and-volumes/
• Documentation:
  • https://docs.cloudstack.apache.org/en/latest/adminguide/virtual_machines.html#instance-delete-protection
  • https://docs.cloudstack.apache.org/en/latest/adminguide/storage.html#volume-delete-protection
• API:
  • updateVirtualMachine: https://cloudstack.apache.org/api/apidocs-4.22/apis/updateVirtualMachine.html
  • updateVolume: https://cloudstack.apache.org/api/apidocs-4.22/apis/updateVolume.html

Changes

Added deleteprotection option to cloudstack_instance and cloudstack_disk resource and updated the corresponding documentation pages.

• modified cloudstack/resource_cloudstack_instance.go
• modified cloudstack/resource_cloudstack_disk.go
• modified website/docs/r/instance.html.markdown
• modified website/docs/r/disk.html.markdown