Initial baseline image (Ansible)

Initial baseline image (Ansible)

Create a baseline image using Ansible Playbooks. Considering using
Ansible for our Job builds so why not also use it here for packer
builds.

Ansible seems to have support for the things our helper scripts do
which allows us to get rid of them if we use Ansible. Each Ansible
task also validates itself to make sure the commands run through,
something we don't currently do and can better let us know when
something goes wrong.

Issue: RELENG-288
Depends-On: Ibf4e1ff13d93ad59eaea4a0582a4b77446870dc0
Change-Id: I96d1ec83cec82130d30a245c39b6ac8018f92428
Signed-off-by: Thanh Ha <thanh.ha@linuxfoundation.org>