Add volume permission to AMIs shared in the destination account

[rJunx]

Is your feature request related to a problem? Please describe.
After sharing AMIs from the source account to the destination, the destination admin user is not able to copy the AMIs with the error 'You do not have permission to access the storage of this ami'. The use case of copying shared AMIs in destination accounts is related to system robustness and security, e.g. preventing source AMIs accidentally deleted or securing AMIs with own CMK (encryption).

Describe the solution you'd like
Add snapshot_users to allow users to create volumes. More details are referred to https://packer.io/docs/builders/amazon-ebs.html

Describe alternatives you've considered
None.

Additional context
Without the volume permission granted, the shared AMIs can only be used to create environments, but not copy.