Use zuulv3 syntax for configuration

Update zuulv3.o.o to use proper configuration files / syntax. Add
zuul_connection to public hiera yaml.

Also default zuul_connections to a list, to ensure our testing passes
properly.

Change-Id: I73fd119f41be029fe969596b781918309642b557
Depends-On: I6d0ec2ef2d1b0c86fdcd06bfca01c02a6fffa7f3
Signed-off-by: Paul Belanger <pabelanger@redhat.com>

hiera/fqdn/zuulv3.openstack.org.yaml

@@ -0,0 +1,15 @@
+---
+zuul_connections:
+  - name: 'smtp'
+    driver: 'smtp'
+    server: 'localhost'
+    port: '25'
+    default_from: 'zuul@zuulv3.openstack.org'
+    default_to: 'zuul.reports@zuulv3.openstack.org'
+
+  - name: 'gerrit'
+    driver: 'gerrit'
+    server: 'review.openstack.org'
+    canonical_hostname: 'git.openstack.org'
+    user: 'zuul'
+    sshkey: '/var/lib/zuul/ssh/id_rsa'

manifests/site.pp

@@ -1162,6 +1162,9 @@ node 'zuulv3.openstack.org' {
     git_name             => $git_name,
     revision             => $revision,
     python_version       => 3,
+    zookeeper_hosts      => 'nodepool.openstack.org:2181',
+    zuulv3               => true,
+    connections          => hiera('zuul_connections', []),
   }
 
   class { '::zuul::scheduler':