@Override
        public void abort(String why, Throwable e) {
        }
Delete the master znode if its content (ServerName string) is the same as the one in the znode
file. (env: HBASE_ZNODE_FILE). I case of master-rs colloaction we extract ServerName string
from rsZnode path.(HBASE-14861)
@return true on successful deletion, false otherwise.
hbase-server/src/main/java/org/apache/hadoop/hbase/ZNodeClearer.java