* Debian guests

* GlusterFS

* Attempt to make Ansible tasks idempotent

  At the moment it looks like this:

    PLAY RECAP ****************************************************************
    m1ad1                      : ok=35   changed=1    unreachable=0    failed=0
    m1base1                    : ok=28   changed=0    unreachable=0    failed=0
    m1build1                   : ok=33   changed=2    unreachable=0    failed=0
    m1cbuild1                  : ok=39   changed=3    unreachable=0    failed=0
    m1n1                       : ok=89   changed=22   unreachable=0    failed=0
    m1n2                       : ok=73   changed=14   unreachable=0    failed=0
    m1n3                       : ok=73   changed=14   unreachable=0    failed=0

* Containers

  - Vagrant CentOS 7 docker image (roboxes./centos7) can not be used
    with Vagrant: no vagrant user

  - Vagrant CentOS 7 docker image (roboxes./centos7) can not be
    upgraded: RPM checksum failure on a systemd package

  - systemd + selinux + Docker == raging dumpster fire

    Must run host in permissive mode

  - Vagrant does not set up private networks in Docker containers