Use auto_deploy package on rollback command

What does this MR do?

Use auto_deploy package on rollback command

While practicing a rollback to gstg, I noticed the rollback check <env> command returns the package using the ProductVersion.to_s version, which only returns part of the auto-deploy package. This complicates the rollback process since the Release Managers needs to find out the specific current and target packages (which is manual work)

This commit modifies rollback check <env> to return 'target' and 'current' using the auto_deploy package syntax instead of the to_s output of ProductVersion

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• [-] Has documentation been updated?