HBASE-7788 [snapshot 130201 merge] Fix flakey TestRestore*SnapshotFromClient#testCloneSnapshot
    
Adds table availability check on post clone wait.




git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/hbase-7290v2@1446152 13f79535-47bb-0310-9956-ffa450edef68