acu95614 - Add a helper to chk if conn is initialized

GatewayDaemon uses start and stop to initialize and
teardown AMQP connections. Call back block during
stop does not get invoked if connection object
is not yet initialized. A helper in AMQP to
verify the connection status will help
to the gateway to act based on connection object
Merge pull request #11 from rightscale/purplePRS_13_6_acu95614_add_helper_to_check_if_conn_is_initialized

acu95614 - Add a helper to chk if conn is initialized