Currently it just runs a command as soon as it is receives a message matching its topic pattern.
It would be nice if we could have it wait for 10 seconds first so that it can accumulate a series of messages first.
This would be nice for:
For these use cases, we should also have a --daemonize option so we can put fedmsg-trigger in the background.
Maybe re-use the logic from here: https://github.com/fedora-infra/fedmsg-genacls/blob/develop/fedmsg_genacls.py#L10-L50
Implement wait_for argument for fedmsg-trigger