Vagrantfile resize handling
Vagrantfile resize handling

This implements the resize in a more "vagrant way", by using a
plugin that is meant for resizing the instance's disk.

Advantages:
- We don't have to ship the resize code contnet
- It works when stopping the machine and starting it up again.

Change-Id: I4f725131f15c57f176201aac0d967459792ebe5a

cloudnull/os-ansible-deployment,stackforge/os-ansible-deployment,bunchc/openstack-ansible,bunchc/openstack-ansible,cfarquhar/openstack-ansible,openstack/openstack-ansible,openstack/openstack-ansible,yanyao/openstack-ansible,cfarquhar/openstack-ansible,stackforge/os-ansible-deployment,yanyao/openstack-ansible,cloudnull/os-ansible-deployment