Added a test for removing a role from both roles and suppressed roles.
Added a test for removing a role from both roles and suppressed roles.

Review: https://reviews.apache.org/r/70966/

kaysoky/mesos,reneploetz/mesos,chhsia0/mesos,kaysoky/mesos,dforsyth/mesos,reneploetz/mesos,dforsyth/mesos,chhsia0/mesos,reneploetz/mesos,kaysoky/mesos,kaysoky/mesos,chhsia0/mesos,Gilbert88/mesos,Gilbert88/mesos,reneploetz/mesos,reneploetz/mesos,chhsia0/mesos,chhsia0/mesos,abudnik/mesos,dforsyth/mesos,abudnik/mesos,Gilbert88/mesos,abudnik/mesos,dforsyth/mesos,Gilbert88/mesos,abudnik/mesos,reneploetz/mesos,abudnik/mesos,dforsyth/mesos,Gilbert88/mesos,Gilbert88/mesos,Gilbert88/mesos,abudnik/mesos,chhsia0/mesos,kaysoky/mesos,chhsia0/mesos,abudnik/mesos,reneploetz/mesos,kaysoky/mesos,dforsyth/mesos,kaysoky/mesos,dforsyth/mesos