Fix genconfig on vagrant
Fix genconfig on vagrant

We run tox at the root of the home directory, so we need to pass it the
path to the tox.ini file.

TrivialFix

Change-Id: Ieb52d845b77f556aee5cd194a8ef86561b7849b2

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