Add OpenStack support

This change allows the provisioning of an All-in-One OpenStack
deployment through ansible-kolla project. Given that it uses System D
this adds an exception to use Ubuntu Xenial release.

Change-Id: I57973a1b5cc331654fbabf7932ddcfef817afedf
Signed-off-by: Victor Morales <victor.morales@intel.com>
Issue-Id: INT-329
diff --git a/bootstrap/vagrant-onap/vagrant_utils/postinstall.sh b/bootstrap/vagrant-onap/vagrant_utils/postinstall.sh
index c1b1c33..8bf116d 100755
--- a/bootstrap/vagrant-onap/vagrant_utils/postinstall.sh
+++ b/bootstrap/vagrant-onap/vagrant_utils/postinstall.sh
@@ -4,6 +4,12 @@
     set -o xtrace
 fi
 
+if [[ "$1" == "openstack" ]]; then
+    source /var/onap/openstack
+    deploy_openstack
+    exit
+fi
+
 source /var/onap/functions
 
 update_repos