HBASE-9251. list_namespace_tables seems to fail

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1515185 13f79535-47bb-0310-9956-ffa450edef68
HBASE-9023 Addendum makes the wait for flush look for 2 store files



git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1515189 13f79535-47bb-0310-9956-ffa450edef68