Pull SMC Enhancements Back Upstream

[jmchilton]

https://github.com/galaxyproject/planemo-machine/compare/master...kellrott:dream-smc?expand=1

Probably at very least the following enhancements should be brought back up stream.

• roles/dream-smc-client/templates/gce_mount_tool_disk.j2
• roles/dream-smc-client/templates/galaxy_lib_sync.py.j2
• roles/dream-smc-client/templates/galaxy_lib_sync_supervisor.conf.j2
• scripts/setup_gce.sh
• roles/galaxyprojectdotorg.devbox/tasks/main.yml
• roles/galaxyprojectdotorg.devbox/templates/api.key.j2

[jmchilton]

Ping @mvdbeek - in re. bgruening/docker-galaxy#135 (comment). Should be pretty easy to pull some of this stuff out and place it in ansible-galaxy-extras.