virtualbox,vmware: http server should listen on IPv4

Updates to Into: Build An Image docs

website: Fix statement in machine-readable 'ui' type docs.

post-processor/atlas: fix index out of range panic

Tests were failing incorrectly when OpenStack environment variables were...

Fix digitalocean provider for private images [fixes mitchellh/packer#1792]

virtualbox/common: remove devices should delete floppy controller

builder/google: don't hardcode SSH timeout [GH-1781]

GH-1879

builder/aws: Add pre validate step, to validate things before building.

Fixes 'unknown configuration key' errors for 'only' and 'except'

check the region before do the ami copy to fix the duplicate ami [GH-2123]

"Name" parameter required for copying ami across regions [GH-2172]

Fix a problem preventing `tag` or `save` from docker-tag artifacts

replace opscode with chef

Fix error in isotime demo in the documentation of Configuration Templates

Prevent select from spewing garbage to the terminal