Closes #3273

Ansible: don't use deprecated ssh options when ver above 2.0

Ansible 2.0 deprecated ansible_ssh_user, ansible_ssh_port, ansible_ssh_host
instead use ansible_user, ansible_port, and ansible_host in the
inventory file.

Closes #3275

Fixing broken link in OpenStack builder docs

Make communicator's WinRM defaults more intuitive when using SSL.

fix assign to driveArgs

Signed-off-by: Vasiliy Tolstov <v.tolstov@selfip.ru>

This reverts commit 3b8f0023.

builder/qemu: fix drive args

Ansible: os.Environ() should always be passed to the ansible command.

Fixes GH-3271

Regression introduced in GH-3203

Signed-off-by: Vasiliy Tolstov <v.tolstov@selfip.ru>

"environmental variable" -> "environment variable"

They are called environment variables, rather than environmental variables[1].
This small fix corrects that in the docs.

[1] http://man7.org/linux/man-pages/man7/environ.7.html

Parallels: Support relative paths in output_directory

This reverts commit c23749af.

website/docs: Add `shell-local` post-processor to sidebar.

Update dist script to sign signature file