Checkmk Werk 7952: mk_docker.py: Add base_url to bakery rule config options

ID: 7952 Title: mk_docker.py: Add base_url to bakery rule config options Component: Checks & agents Level: 1 Class: New feature Version: 1.7.0i1 Users with non-default setups can now provide the base URL for docker API engine calls. By default we are trying to connect via the unix socket at unix://var/run/docker.sock.