[RFE] When deleting a user who owns a resource (such as a vm), provide an option to automatically transition any ownership to the user's group

[jrafanie]

I'm user in a group and I create multiple vms and templates.
If my user is deleted in the UI, we prevent it from deleting because my user owns resources, the vms and templates. This is by design.

It would be useful to provide a way to automatically change ownership of the resources to the user's group. Perhaps, if they're in multiple groups, you can select which group to use. If there's no other users in the group, perhaps the system can email or raise a notification for the administrator to manually reassign ownership so the user can be deleted. We would need to enumerate the different ownership types and ensure these types could automatically be transitioned to another user/group.

This will require some UI for handling specifying the ownership transfer. We could possibly use the default behavior of raising an error and aborting and offer another ability to specify how to reassign the ownership.