Increase verbosity of pubsubbeats

Created by: ElizabethStirling

Pubsubbeats normally runs with zero output, even if it encounters errors. This makes debugging suck. The only way I've found to allow debugging is to run it with ./pubsubbeat -c pubsubbeat.yml -e -d "*", but these logs are far too verbose. I want to find a way to configure pubsubbeats to output warning and error level logs without including debug level logs. I assume there's a way to do this, but I'm unsure.