Change qpid_heartbeat default.

The default value of qpid_heartbeat of 5 seconds is unnecessarily
aggressive.  Change it to 60 seconds to reduce the possibility of
getting disconnected from qpidd under normal circumstances.

Fix bug 1050661.

Change-Id: I9525e74f96314c2c9183d6b10cf503936c81f589

glance/notifier/notify_qpid.py

@@ -62,7 +62,7 @@
                default=0,
                help='Equivalent to setting max and min to the same value'),
     cfg.IntOpt('qpid_heartbeat',
-               default=5,
+               default=60,
                help='Seconds between connection keepalive heartbeats'),
     cfg.StrOpt('qpid_protocol',
                default='tcp',