This patch sets up foundations for Proof of Concepts that
simply materialize documentation into Ansible instructions
executed in virtualized Vagrant environment.

This Proof of Concept allows to easily build:
1. *.deb packages on Ubuntu 16.04; AND
2. *.rpm packages on CentOS 7.4.
It also sets up DEB and RPM repository over HTTP that can
be used to pull these openvswitch packages with apt-get
or yum from another host.

This particular Proof of Concept is intended to address
following use-cases:
1. for new OVS users to see how debian and rpm packages are
   built;
2. for developers to easily check for packaging build
   regressions;
3. for developers to easily share their sandbox builds
   into QE setups (opposed to manually copying binaries);
4. for developers to add other Proof of Concepts
   that possibly may require full end-to-end integration
   with other thirdparty projects (e.g. DPI, libvirt, IPsec)
   and need Open vSwitch packages.

Tested-by: Greg Rose <gvrose8192@gmail.com>
Reviewed-by: Greg Rose <gvrose8192@gmail.com>
Signed-off-by: Ansis Atteka <aatteka@ovn.org>