Add option for quota to be applied on group but enforced at user level

[dmetzger57]

Related BZ: https://bugzilla.redhat.com/show_bug.cgi?id=1653492

Business use-case requires that we efficiently apply a quota at the group level, which it is today, however we need this quota to map to each user.

For example, group1, has a quota of: 10 vCPU, 5GB RAM, and 1T Disk

Today: if group1 has 10 users, that quota is shared between all 10 users, so if user1 uses 8 vCPU and 4GB of RAM, there is little space left.

What we need: we need each user in group1 to have 10 vCPU, 5GB of RAM, and 1T quota associated with their user account. Additionally, it would be great to allocate instances/VMs to that user as well.

This would need to be an option to enable/disable, or even combine with the current quota implementation.