residual grants after delete action (bug1125637)

remove all applicable grants when role is deleted
(sql/kvs solution only)

Fixes: bug #1125637

Change-Id: I3a958c6d56739e37a95f6c713fab154827e9ceca
(cherry picked from commit e16742bdf2f1fa7386f2983b037a78fde4a576c3)
Merge "residual grants after delete action (bug1125637)" into stable/grizzly