install Chocolatey and puppet provider

Alternatively could use the script in packer-windows to provide this in
advance
comment out 2013 setup for now, using SDK 7.1
Merge branch 'install-chocolatey'

Conflicts:
	manifests/default.pp
install WiX using Chocolatey

Easier than trying to get current Codeplex downloads and renaming the file in
this case. Same approach could be used for several others, but the separate
download step allows saving to a permanently shared cache during development