Allow groups to own other groups

At https://spaces.at.internet2.edu/display/COmanage/CO+Groups+and+Group+Memberships I read that "Nested Groups only confer group membership, they cannot be used to manage group ownership."

For ACCESS (https://access-ci.org/), we need anyone in the security team to have the ability to add a user to the AccessDenied group. Currently, that requires us to add each individual security team member as an owner of the AccessDenied group.

This is a feature request to allow groups to own other groups, so adding someone to the SecurityTeam group would make them an owner of the AccessDenied group (and removing them from the security team would remove them as an owner of that group).