website: Fixed Rackspace example

builder/vmware/esxi: checksum iso upload to not always upload

builder/virtualbox: Accept VirtualBox release candidate version

packer: Fixed typo in error message

website: Specifically call out the comma after `"builders": [...]`

Install gox during build time

post-processor/vagrant: hyper-v

Just so that we can just run `make` without installing gox separatelyy

Cleaned up Go formatting with gofmt.

While running through the getting-started examples, I ran into a strange
error:

	packer $ packer validate example.json
	Failed to parse template: Error in line 16, char 2: invalid character
	'"' after object key:value pair
	  "provisioners": [{
	packer $

The error was not immediately obvious, as this is my first time working
with Packer, and like many users this also happens to be my first time
working with JSON.

Solution:

I was missing a comma after the 'builders' configuration. I'm sure this
is a common problem, so let's specifically mention that in the document.

While running through the getting-started examples, I ran into a strange
error:

	packer $ packer validate example.json
	Failed to parse template: Error in line 16, char 2: invalid character
	'"' after object key:value pair
	  "provisioners": [{
	packer $

The error was not immediately obvious, as this is my first time working
with Packer, and like many users this also happens to be my first time
working with JSON.

Solution:

I was missing a comma after the 'builders' configuration. I'm sure this
is a common problem, so let's specifically mention that in the document.

As per https://github.com/mitchellh/packer/issues/1142, it's critical to add openstack_provider: rackspace in order to get anything to work reliably with Rackspace and Packer in 6.0.

Question: should the openstack_provider field now be marked as required?

[DOC] Changed to reflect the new httpS endpoint for Chef, since Chef 11.x

**New post processor:** `vagrant-cloud` - Push box files generated by
    vagrant post processor to Vagrant Cloud. [GH-1289]

provisioner/chef-*: Fix remotePaths for Windows [GH-394]

Fix remotePaths when provisioning Linux from Windows
Fixes #394

alphabetize options

Vagrant Cloud Post-Processor

fix invalid esx5 path separator in windows

before, this code had joining path elements by filepath module. filepath module generate path string with backslash-joined in Windows. but ESX require path string with slash-joined. it means that this code generate illegal path string in windows. illegal path string raised "Error creating disk".

this patch fixes path separator from backslash to slash in windows. from this, creating disk would succeed without error.

Replace ListServers hack with update ServerById

[gophercloud#168](https://github.com/rackspace/gophercloud/issues/168) has been
patched to not panic on non-existing server id's. If an error is returned,
check if the error is a 404 first before bailing.

builder/openstack: Workaround for gophercloud.ServerById crashing [GH-1257]