Serialize ansible-playbooks to 10% of nodes in infracloud

Bump ansible-playbook runs to 10% of our compute nodes, this is ~12
nodes at a time.  We also max failures out to 100% because we actually
want to run puppet across all nodes, regardless of what fails.

Change-Id: I74b294820d8cd342fd7e5466ee63f198177412b4
Signed-off-by: Paul Belanger <pabelanger@redhat.com>

playbooks/remote_puppet_infracloud.yaml

@@ -7,7 +7,8 @@
       manage_config: true
 - hosts: "compute*.ic.openstack.org:!disabled"
   gather_facts: true
-  serial: 1
+  max_fail_percentage: 100
+  serial: "10%"
   roles:
     - role: puppet
       manage_config: true