Install tox in Vagrant
Install tox in Vagrant

Change-Id: I374d5f3702c1874b76e582b8585246d670eeb74a
Closes-Bug: #1505281

GalenMa/kolla,mrangana/kolla,rahulunair/kolla,rajalokan/kolla,coolsvap/kolla,nihilifer/kolla,stackforge/kolla,mandre/kolla,mrangana/kolla,nihilifer/kolla,limamauricio/mykolla,stackforge/kolla,toby82/kolla,openstack/kolla,intel-onp/kolla,negronjl/kolla,rahulunair/kolla,intel-onp/kolla,limamauricio/mykolla,negronjl/kolla,dardelean/kolla-ansible,GalenMa/kolla,stackforge/kolla,openstack/kolla,negronjl/kolla,coolsvap/kolla,tonyli71/kolla,tonyli71/kolla,dardelean/kolla-ansible,dardelean/kolla-ansible,coolsvap/kolla,rajalokan/kolla,mandre/kolla,mandre/kolla,toby82/kolla,toby82/kolla,limamauricio/mykolla,rajalokan/kolla