[Buildbot] #3263: Make ClusteredScheduler AsyncService

[Buildbot trac]

#3263: Make ClusteredScheduler AsyncService
-------------------+----------------------------
Reporter:  tardyp  |       Owner:  yetanotherion
    Type:  defect  |      Status:  accepted
Priority:  major   |   Milestone:  0.9.+
 Version:  master  |  Resolution:
Keywords:          |
-------------------+----------------------------
Changes (by dustin):

 * milestone:  0.9.0 => 0.9.+


--
Ticket URL: <http://trac.buildbot.net/ticket/3263#comment:2>
Buildbot <http://buildbot.net/>
Buildbot: build/test automation