HBASE-8173 HMaster#move wraps IOException in UnknownRegionException

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.95@1460794 13f79535-47bb-0310-9956-ffa450edef68
HBASE-8161 setting blocking file count on table level doesn't work

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.95@1460823 13f79535-47bb-0310-9956-ffa450edef68