Merge pull request #809 from edx/feanil/jenkins_deps

Add common as a dependency of jenkins master.
Merge pull request #808 from edx/feanil/minor_fixes

Add curl for vagrant and update docs for run_role.yml
bugfix
Merge pull request #794 from edx/cg/fix-release-vagrants

Change boxname on fullstack, and remove ansible play from devstack
switching the cron sync to use s3cmd

aws sync is not looking like it will be reliable
creating directories first
changing dest to a dir
updating s3cmd version
Merge pull request #811 from edx/jarv/add-back-s3cmd

Jarv/add back s3cmd
Updated Vagrantfile

Make the configuration versions of the Vagrantfile more explicit.
Require specific versions of Vagrant.
Adding same changes to other Vagrantfiles.
initial working version, needs var refactoring
docs
refactoring.
Adding to play, requiring enabled flag.
adding true flag, belongs elsewhere?
Merge pull request #810 from edx/e0d/es-bugfix

bugfix
removing boilerplate files
Removing unused var.