HBASE-10797 Add support for -h and --help to rolling_restart.sh and fix the usage string output
HBASE-10797 Add support for -h and --help to rolling_restart.sh and fix the usage string output

git-svn-id: eacefbb430aa6993bec52677de2e7e10bea24366@1579478 13f79535-47bb-0310-9956-ffa450edef68

mapr/hbase,mapr/hbase,mapr/hbase,mapr/hbase,mapr/hbase,mapr/hbase,mapr/hbase,mapr/hbase,mapr/hbase