retry longer for default route, narrow when setup runs to fix test breakage

Change-Id: If31e3e12fad58912747de01ccf6ebe759db807a4
diff --git a/onboard-exampleservice-playbook.yml b/onboard-exampleservice-playbook.yml
index 2ca154f..d167527 100644
--- a/onboard-exampleservice-playbook.yml
+++ b/onboard-exampleservice-playbook.yml
@@ -3,7 +3,7 @@
 # Adds the exampleservice to the currently running pod
 
 - name: Include vars
-  hosts: all
+  hosts: head
   tasks:
     - name: Include variables
       include_vars: "{{ item }}"