NFS/VBox: remove dedicated cleanup action in favour of native routine.
move test/acceptance to test/acceptance_old
Avoid udev rule masking and configure ifaces with sed instead.
systemctl wasn't a good idea
fixed broken link
Merge pull request #2593 from bennlich/patch-1

fixed broken link on configuration version page
[provisioner/chef]: Update base to fix typo.

It seems this was introduced by accident with #2281.
Merge pull request #2594 from johnbellone/patch-1

provisioner/chef: Update base to fix typo.
Merge branch 'master' of github.com:mitchellh/vagrant
Start acceptance test config stuff
providers/virtualbox: only clear shared folders if we have a VM
test/acceptance: set the VBOX_USER_HOME
update rake tasks for acceptance testing
Update README
Update gemfile for others
Merge branch 'f-acceptance'

This brings in the new acceptance testing style. See the README.
provisioners/docker: Only assign the `image` config in case it was not specified
website/docs: Add an example on how to run multiple containers based off the same image
website/docs: Add some links to Docker provisioner page
test/acceptance: don't have the context show up as a component