TEZ-1728. Remove local host name from Fetcher thread name. (sseth)
(cherry picked from commit dfef97f6cf703d9c1c02f237ce17951f6bcc4a88)
TEZ-1547. Make use of state change notifier in VertexManagerPlugins and fix TEZ-1494 without latency penalty (bikas)
(cherry picked from commit cd0ed751ae502492733738f2d7d7d0ae8e4224e9)
Update branch-0.5 version to 0.5.3-SNAPSHOT