CORD-1455 Fix missing SSH key for HW pod install

Change-Id: Ie465d010a9b5c3f190275d55db5ebf13f7fd24cf
diff --git a/prime-node.yml b/prime-node.yml
index 7aaa324..81f67c8 100644
--- a/prime-node.yml
+++ b/prime-node.yml
@@ -12,3 +12,7 @@
   roles:
     - registry
 
+- name: install local SSH key on head node
+  hosts: head
+  roles:
+    - ssh-key