Update Vagrantfile to make use of OpenStack provider

Updating the Vagrantfile so that builds may be run in an OpenStack
cleanroom instance.  More to come on this one.

Vagrantfile

@@ -3,29 +3,51 @@
 GIFTWRAP_MANIFEST = ENV['GIFTWRAP_MANIFEST'] || 'examples/manifest.yml'
 GIFTWRAP_BUILDBOX_NAME = ENV['GIFTWRAP_BUILDBOX_NAME'] || 'ursula-precise'
 GIFTWRAP_BUILDBOX_URL = ENV['GIFTWRAP_BUILDBOX_URL'] || 'http://apt.openstack.blueboxgrid.com/vagrant/ursula-precise.box'
+GIFTWRAP_POSTBUILD_SCRIPT = ENV['GIFTWRAP_POSTBUILD_SCRIPT'] || ""
 
 Vagrant.configure('2') do |config|
   config.vm.box = GIFTWRAP_BUILDBOX_NAME
   config.vm.box_url = GIFTWRAP_BUILDBOX_URL
 
+  config.ssh.username = 'ubuntu'
+  config.vm.synced_folder ".", "/vagrant", disabled: true
+  config.vm.provider :openstack do |os|
+    os.openstack_auth_url    = "#{ENV['OS_AUTH_URL']}/tokens"
+    os.username              = ENV['OS_USERNAME']
+    os.password              = ENV['OS_PASSWORD']
+    os.tenant_name           = ENV['OS_TENANT_NAME']
+    os.flavor                = 'm1.small'
+    os.image                 = 'ubuntu-12.04'
+    os.openstack_network_url = ENV['OS_NEUTRON_URL']
+    os.networks              = ['internal']
+    os.floating_ip_pool      = 'external'
+    os.rsync_exclude_paths   = []
+    os.rsync_cvs_exclude     = false
+  end
+
   config.vm.provision 'shell', inline: <<-EOF
     if [ -f /etc/lsb-release ]; then
-      . /etc/lsb-release
-      OS=$DISTRIB_ID
+        . /etc/lsb-release
+        OS=$DISTRIB_ID
     elif [ -f /etc/debian_version ]; then
-      OS=Debian
+        OS=Debian
     elif [ -f /etc/redhat-release ]; then
-      OS=RedHat
+        OS=RedHat
     fi
 
     if [ "$OS" == "Debian" ] || [ "$OS" == "Ubuntu" ]; then
-	/vagrant/scripts/prepare_debian.sh
+        /vagrant/scripts/prepare_debian.sh
     fi
 
     gem install --no-ri --no-rdoc fpm
     cd /vagrant
     python setup.py install
     giftwrap build -m #{GIFTWRAP_MANIFEST}
+
+    if [ ! -z "#{GIFTWRAP_POSTBUILD_SCRIPT}" ]; then
+        #{GIFTWRAP_POSTBUILD_SCRIPT}
+    fi
+
   EOF
 
   config.vm.define 'giftwrap' do |c|