Added support for Vagrant VirtualBox provider to
provision an Ubuntu VM to run kolla. A new
bootstrap-ubuntu.sh script has been created which
provisions the Ubuntu VM with all kolla depdencies
including docker 1.8.2, ansible 1.9.6 and python-tools
Also created vars in the Vagrantfile to define the cpu and memory settings of the
VM nodes used to run kolla
DocImpact
Change-Id: I4609d7f577e948b04663901afd0c5d1d154c8ac4
Implements: blueprint vagrant-ubuntu-support