Gate: Restrict Ansible fact gathering to base subset

In Ansible 2.x the fact gathering process includes facts gathered
by facter [1] and ohai [2]if they are available. While this may be
useful in some environment, OpenStack-Ansible does not make use of
any of these facts in any of its playbooks/roles and the facts
gathered are therefore just an extra overhead.

This patch removes the facter and aohai gathering subsets. On a
test AIO this reduced the execution time for fact gathering to the
host and all running containers from 1m5s to 6s.

[1] https://docs.puppet.com/facter/
[2] https://docs.chef.io/ohai.html

Change-Id: Id2a932a98ebfa2534bcce7ba488906fa4f03d0a6

scripts/run-playbooks.sh

@@ -39,10 +39,10 @@ info_block "Checking for required libraries." 2> /dev/null || source $(dirname $
 
 # Initiate the deployment
 pushd "playbooks"
-  ansible -m setup localhost
+  ansible localhost -m setup -a 'gather_subset=!facter,!ohai'
 
   if [ "${DEPLOY_HOST}" == "no" ]; then
-    ansible -m setup all
+    ansible all -m setup -a 'gather_subset=!facter,!ohai'
   fi
 
   if [ "${DEPLOY_HOST}" == "yes" ]; then
@@ -76,7 +76,7 @@ pushd "playbooks"
 
     # Create the containers.
     install_bits lxc-containers-create.yml
-    ansible -m setup all
+    ansible all -m setup -a 'gather_subset=!facter,!ohai'
     # Log some data about the instance and the rest of the system
     log_instance_info