[Hawkular-dev] Automated Docker build is working again

Matt M. and I successfully switched the build from Docker Hub to our own Jenkins build slave. The chain is as follows hawkular/hawkular builds in Travis-ci (10-16 minutes) -> Docker image builds in our Jenkins -> image is pushed to Docker Hub (8 minutes) -> hawkular is deployed to livingontheedge.hawkular.org (3-5 minutes) Viet