HBASE-7192 Move TestHBase7051.java into TestAtomicOperation.java

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.95@1471622 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/0.95' into 0.95-gd