[V2] Riemann events
Created by: mwilliams-ct
This is version 2 of my previous pull request. It corrects the following issues:
- riemann-server and riemann-port are no longer in ybd.conf by default
- If riemann-server is not defined, then no riemann events will be fired
- If a server is defined but cannot be contacted (eg it is down), ybd will timeout after 30 seconds
- Fully pep8 compliant