= Change Requested =

Add to pkgdb the function set_remove_acl_request.

This functions allows a packager to set or remove an ACL request, this mean setting the status of the ACL to "Awaiting Review" or "Obsolete".
But the status is set to "Awaiting Review" only if the ACL is not already "Approved".

= Reasoning =

With pkgdb-cli one can do
pkgdb-cli request <package> commit <branch>
Then do:
pkgdb-cli request <package> all <branch>

With the present logic, commit (which might in the meanwhile have been Approved) would be set back to "Awaiting Review". This is not something we desire :-)