Cannot control reconnection settings

I am just capturing some stuff I noticed while trying to change the reconnection policy for HostManager agent (so it would try more often). Not an ocs bug really, but the fact that we're using ApplicationRunner seems to mean we can't change those parameters easily.

It looks like you should be allowed to pass reconnection policy parameters (such as max_retry_delay) to ApplicationRunner. But once you do so, you activate code paths that prevent some desirable behaviors (such as being able to start up when crossbar isn't already running). ApplicationRunner is supposed to be just a helper class for quick development, anyway, so I think the solution is to write a substitute that handles reconnection attempts the way we want.

Start by inspecting how the HostManager agent uses ApplicationRunner and review the referenced autobahn/twisted/wamp.py paths. Determine how reconnection settings such as max_retry_delay should be passed without preventing startup when Crossbar is absent. Done means a documented substitute or design is established that supports the desired reconnection attempts and startup behavior.