cord-tester deploy and verify phase overhaul for CiaB scenario.
The run of subscriber tests is disabled for now since running CiaB inside a head node VM fails ONOS start with insufficient memory.
Should work on physical head nodes.

Change-Id: Ib1dde64c8f7da80ff8d7a62a29c0cd14b59874f3
diff --git a/roles/prereq/defaults/main.yml b/roles/prereq/defaults/main.yml
index 731d94f..a2898c9 100644
--- a/roles/prereq/defaults/main.yml
+++ b/roles/prereq/defaults/main.yml
@@ -7,8 +7,9 @@
 # default install path
 docker_tools_path: '/usr/local/bin'
 docker_tools_pipework_exe_url: https://raw.githubusercontent.com/jpetazzo/pipework/master/pipework
-
+openvswitch_url: http://openvswitch.org/releases
+openvswitch_version: '2.5.0'
 #docker variables
 docker:
     registry: "{{ docker_registry | default('docker-registry:5000') }}"
-    image_version: "{{ docker_image_version | default('latest') }}"
\ No newline at end of file
+    image_version: "{{ docker_image_version | default('latest') }}"