HBASE-8446 Allow parallel snapshot of different tables

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1480585 13f79535-47bb-0310-9956-ffa450edef68
HBASE-8509 ZKUtil#createWithParents won't set data during znode creation when parent folder doesn't exit (Jefferey and Ted)



git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1480623 13f79535-47bb-0310-9956-ffa450edef68