Allow a higher level scheduler to configure a list of roles for which
offers are initially suppressed upon (re-)subscription to Mesos via the
v1 scheduler API.
Coverage decreased (-0.07%) to 57.438% when pulling c7e76110a786fc39dd06ecf782405d85014da226 on jdef:controller_initial_role_suppress into c5e931bfa91eb892048cadec347443f189a95957 on mesos:master.
Allow a higher level scheduler to configure a list of roles for which offers are initially suppressed upon (re-)subscription to Mesos via the v1 scheduler API.