give zaro access to zuul-dev server

Zaro needs access to zuul-dev server to test gerrit upgrades.  Zaro has read
and agrees to the following http://ci.openstack.org/sysadmin.html#ssh-access

Change-Id: I0a9e8a4fbe89b64b98510bb9a474d98ca8f0a01f

modules/openstack_project/manifests/zuul_dev.pp

@@ -11,6 +11,11 @@ class openstack_project::zuul_dev(
   $statsd_host = '',
   $gearman_workers = []
 ) {
+
+  realize (
+    User::Virtual::Localuser['zaro'],
+  )
+
   # Turn a list of hostnames into a list of iptables rules
   $iptables_rules = regsubst ($gearman_workers, '^(.*)$', '-m state --state NEW -m tcp -p tcp --dport 4730 -s \1 -j ACCEPT')