Merge pull request #11 from HomeAdvisor/kafdrop-2.0.0

Sync Kafdrop 2.0.0 from HomeAdvisor

Update Spotify docker-maven-plugin to 0.4.13

Work around for this issue with Docker on Mac:

https://forums.docker.com/t/spotify-docker-maven-plugin-cant-connect-to-localhost-2375/9093