Improve help for periodic message_reap_interval
The help text that went with the message_reap_interval
wasn't clear and didn't include the time unit that was
being used.  This patch improves the wording and indicates the
value is seconds.
@@ -26,7 +26,8 @@ messages_opts = [
cfg.IntOpt('message_ttl', default=2592000,
help='message minimum life in seconds.'),
cfg.IntOpt('message_reap_interval', default=86400,
- help='interval between period task to clean expired messages.')
+ help='interval between periodic task runs to clean expired '
+ 'messages in seconds.')
]
