Logging & Monitoring Upgrade

[hkeeler]

Upgrades all logging and monitoring images to the latest version, pinning to specific version where we were previously using latest. Also, splits logstash filters from the the input/output, which can be quite different depending on where the stack is running.

[hkeeler]

We should be good-to-go for merge here. A couple things to note, though:

1. I am using the default UDP syslog:// connection from logspout to logstash, instead of syslog+tcp:// as is required in our test env. TCP doesn't work well in the Compose setup since logstash is never completely started by the time logspout tries to write to it, which closes the connection.
2. You'll notice an empty Kibana Dockerfile. At one point I was adding some configs to the default Kibana setup. I suspect I will be doing so again, so I think its worth keeping it in there for now.