CORD-3115 Update M-CORD test to work with 6.0

Change-Id: I4daa55d281196633b298cce19012cd915a23d302
diff --git a/test/mcord-cavium-test-playbook.yml b/test/mcord-cavium-test-playbook.yml
index 794852a..46f5179 100644
--- a/test/mcord-cavium-test-playbook.yml
+++ b/test/mcord-cavium-test-playbook.yml
@@ -19,7 +19,7 @@
 # Tests CiaB cord-pod XOS configuration
 
 - name: Run base M-CORD tests
-  hosts: head
+  hosts: all
   become: no
   # These variables could be elevated to the profile. Think about
   # doing this after the E2E test framework is complete.