Disable puppetdb on the puppetmaster

We don't need the puppetmaster to send anything to puppetdb
since we don't use the puppetmaster any more -- reports are
injected into puppetdb with ansible now.  Actual puppetdb
connections from puppet only happened with 'puppet apply' running
on the puppetmaster, making it undesirably special.  Disable it.

Change-Id: I7df300d71ccfeb3698f5ccb97a73ba37ab4c57e0

manifests/site.pp

@@ -184,6 +184,7 @@ node 'puppetmaster.openstack.org' {
   class { 'openstack_project::puppetmaster':
     root_rsa_key                               => hiera('puppetmaster_root_rsa_key'),
     puppetmaster_clouds                        => hiera('puppetmaster_clouds'),
+    puppetdb                                   => false,
   }
 }