HBASE-8658 hbase clean is deaf to the --config DIR option

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1488045 13f79535-47bb-0310-9956-ffa450edef68
HBASE-8659 LruBlockCache logs too much

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1488052 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk-gd