noetic support

[v4hn]

At the moment, standard usage fails for noetic, because there are not docker containers available yet:

$ git clone -q --depth=1 https://github.com/ros-planning/moveit_ci.git .moveit_ci
$ .moveit_ci/travis.sh
Starting Docker image: moveit/moveit:noetic-ci
docker pull moveit/moveit:noetic-ci
Error response from daemon: manifest for moveit/moveit:noetic-ci not found
The command "docker pull moveit/moveit:noetic-ci" failed with error code 1. 
The command ".moveit_ci/travis.sh" exited with 2.

https://travis-ci.com/github/v4hn/srdfdom/jobs/312340227

I don't know who has permissions to setup these docker images though and what exactly is included there.

[rhaschke]

First, we need to wait for a ros-core docker container.
Here is the list of missing packages for this.

[sloretz]

Related: osrf/docker_images#395

It looks like this repo might have support for a custom docker image name via an environment variable DOCKER_IMAGE. Maybe a temporary workaround would be to create an image that builds unreleased dependencies from source, and push that to docker hub?