[2.0b5] In RegionServer.register, nothing waits for or handles errors from RackController.refresh

[Gavin Panella]

In the following code:

    if self.hostIsRemote and needs_refresh:
        # Needs to be refresh. Perform this operation in a thread but
        # we ignore when it is done.
        log.msg(
            "Rack controller '%s' needs to be refreshed; "
            "performing the refresh operation." % self.ident)
        deferToDatabase(rack_controller.refresh)

[Gavin Panella (allenap)]

This has been fixed in passing by other work.