QPID-5711: HA cannot promote primary if SASL security is enabled.

Updated the qpid-ha tool and qpidd init scripts to handle SASL authentication.
The qpid-ha script as as called by the qpidd-primary init script now reads
authentication settings from the qpidd.conf file and uses them to connect to the local broker.

- qpidd-primary script respects prefix: use installed location for qpidd script, not "service" call
- qpid-ha added --config option qpid-ha options to use qpidd.conf for local broker connection.
- qpid-ha --all use user/pass for each broker.

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1589391 13f79535-47bb-0310-9956-ffa450edef68