communicator/ssh, builder/digitalocean: fix new SSH API from upstream

website: Fix syntax error in puppet template

post-processor/vagrant: pass PackerConfig to sub post-processors

[GH-413] /cc @jasonberanek

[GH-426]

/cc @jerryclinesmith

/cc @jerryclinesmith

/cc @jerryclinesmith - I want the quoting to go into the template. I
realize the cookbooks path doesn't do this and you were following that.
That one is just weird because it is an array and Go templates kind of
suck.

provisioners/chef-solo: add support for roles and data_bags

This reverts commit 0a1d696457ffe859ef8581e249230f39c1723958.

Unfortunately, this was causing `go fmt ./...` to fail.

builder/amazon/instance: exclude everything in /tmp, but keep /tmp itself

There is IMO a bug with image builder that it removes /tmp, in the
current setup. This patch makes the image bundle ignore everyting in
/tmp, but keeps /tmp on the box.

Enforce go 1.1 build version dependency