HBASE-7760 tiny issue in ChaosMonkey - kills meta server instead of root

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1442403 13f79535-47bb-0310-9956-ffa450edef68
HBASE-7748. Add DelimitedKeyPrefixRegionSplitPolicy

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1442408 13f79535-47bb-0310-9956-ffa450edef68