This driver does not appear to be used and all projects will be
switching over to the keystone supported unified limits quota mechanism.
To prepare for switching quota handling to this new code, we want to
deprecate the driver now so we can remove the code and not need to
refactor it into the new handling.
Change-Id: I56fc03affc9c2c47cbc0e38a66aa8b86f56d1499
Signed-off-by: Sean McGinnis <sean.mcginnis@gmail.com>