HBASE-8525 Use sleep multilier when choosing sinks in ReplicationSource

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.94@1485318 13f79535-47bb-0310-9956-ffa450edef68
CHANGES.txt, pom.xml for 0.94.8

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.94@1485407 13f79535-47bb-0310-9956-ffa450edef68