Add 0.95.2 issues to CHANGES.txt.  Also a fix for generate-hadoopX-poms.sh

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.95@1514460 13f79535-47bb-0310-9956-ffa450edef68
Set version to be 0.95.2

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.95@1514490 13f79535-47bb-0310-9956-ffa450edef68
HBASE-9194 Break HMaster metrics into multiple contexts

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.95@1514514 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/0.95' into 0.95-gd