Fix chroot builder to work with chef-solo provisioner. Fixes  #1196

According to be5adb92, the UploadDir
method supports two ways of copying depending on whether a trailing
slash is used:
    src = "dir"  -> dest/dir
    src = "dir/" -> dest

On BSD-based systems (such as OSX, FreeBSD, etc.) the `cp -R` command
handles these two cases automatically.  However, Linux treats "src/" and
"src" the same.

To support the trailing slash syntax portably, we can use:
    src = "dir"   -> dest/dir
    src = "dir/." -> dest

This works on BSD and Linux.  It is better than using wildcards as it
grabs hidden files as well.

This fixes #1196 that prevents the chef-solo provisioner from working
with the chroot builder.

Fix staging_directory default path

Fix website shell provisioner typo.

Adds support for encrypted EBS volumes

vSphere upload hangs due to DOMAIN\account format of username

Remove unused file

builder/parallels: Added missing doc...

Tiny typo.
I really should add a unit test here.

1 line typo

Fixes #1000: Uploading the whole ansible playbook directory

builder/parallels: Don't delete sound, since it doesn't always exist.

builder/parallels: Select which interface to connect to.

The IP address that the guest OS connect to download files from the
http_dir is determined by searching for a host interface with an IP
assigned. Now it is possible to use host_interfaces to select which
interfaces are searched.

builder/parallels: Added pppX interface

Remove extra spaces in the Supported Platforms page.

Add myself to the Community page and added links on the Platform page

/cc @rasa - an example