zkServer.sh usage message should mention all startup options
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Key: ZOOKEEPER-1013
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1013
Project: ZooKeeper
Issue Type: Bug
Components: server
Reporter: Eugene Koontz
Assignee: Eugene Koontz
Priority: Trivial
currently the "Usage" message for zkServer shows:
echo "Usage: $0 {start|stop|restart|status}"
But it seems to me that it should show the other startup options as well, which
are currently: start-foreground, upgrade, print-cmd.
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