Fix gearman installation.

Remove 'include' gearman as it's redundant and results in:

  "Error 400 on SERVER: Duplicate declaration: Class[Gearman]
   is already declared;"

Also, move declaration to zuul manifest as it is part of the
configuration of the OpenStack zuul server.

Change-Id: I9acf0b0d5e6b8c83aca38aa6b201eddf6ea5f023
Reviewed-on: https://review.openstack.org/26264
Reviewed-by: Jeremy Stanley <fungi@yuggoth.org>
Approved: Clark Boylan <clark.boylan@gmail.com>
Reviewed-by: Clark Boylan <clark.boylan@gmail.com>
Tested-by: Jenkins

manifests/site.pp

@@ -234,11 +234,6 @@ node 'zuul.openstack.org' {
       'jenkins-dev.openstack.org',
     ],
   }
-  # co-host gearman-job-server
-  include gearman
-  class { 'gearman':
-    listen => '::',
-  }
 }
 
 # A bare machine, but with a jenkins user

modules/openstack_project/manifests/zuul.pp

@@ -26,6 +26,11 @@ class openstack_project::zuul(
     sysadmins                 => $sysadmins,
   }
 
+  # co-host gearman-job-server
+  class { 'gearman':
+    listen => '::',
+  }
+
   class { '::zuul':
     vhost_name           => $vhost_name,
     jenkins_server       => $jenkins_url,