HBASE-9130 Invert the name of namespace commands to match the snapshots and replication form

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.95@1512860 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/0.95' into 0.95-gd