* Dockerfile updates
* Ubuntus now use apt-get-install wrapper to not leave package lists in the container
* Copy uncommited manage-tools, etc. scripts into container, which
is good for manual testing.
* Remove dependency on virtualenvwrapper for Ubuntus and Fedora
* `ctf-tools-test-action` to quickly test something for another distribution in a docker container, e.g.
`ctf-tools-test-action -d fedora -s -v reinstall qemu`
