Add opendaylight connection to zuul

This adds a connection to the opendaylight Gerrit server to zuul
so that we can perform cross-community testing.

Change-Id: I840b24ebe52c50840180f2dda40a3f8669baa347

hiera/group/zuul-scheduler.yaml

@@ -15,6 +15,13 @@ zuul_connections:
     sshkey: '/var/lib/zuul/ssh/id_rsa'
     gitweb_url_template: 'https://git.openstack.org/cgit/{project.name}/commit/?id={sha}'
 
+  - name: 'opendaylight'
+    driver: 'gerrit'
+    server: 'git.opendaylight.org'
+    baseurl: 'git.opendaylight.org/gerrit'
+    user: 'openstack-zuul'
+    sshkey: '/var/lib/zuul/ssh/id_rsa'
+
   - name: 'mysql'
     driver: 'sql'
 

manifests/site.pp

@@ -1262,7 +1262,7 @@ node /^ze\d+\.openstack\.org$/ {
   }
 
   class { '::zuul::known_hosts':
-    known_hosts_content => "review.openstack.org,104.130.246.91,2001:4800:7819:103:be76:4eff:fe05:8525 ${gerrit_ssh_host_key}",
+    known_hosts_content => "review.openstack.org,104.130.246.91,2001:4800:7819:103:be76:4eff:fe05:8525 ${gerrit_ssh_host_key}\ngit.opendaylight.org,52.35.122.251,2600:1f14:421:f500:7b21:2a58:ab0a:2d17 ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBJbPbJvIQZ4BzdfV13OUj+R4pGwX7tLv7DG8LzzEw3XSAUmHx50E4ObKrpTMEAUZ3Gt6QrrnVr1VXrs+134m7IY=",
   }
 }
 

modules/openstack_project/manifests/zuul_merger.pp

@@ -18,7 +18,7 @@ class openstack_project::zuul_merger(
     gearman_server           => $gearman_server,
     gerrit_server            => $gerrit_server,
     gerrit_user              => $gerrit_user,
-    known_hosts_content      => "review.openstack.org,23.253.232.87,2001:4800:7815:104:3bc3:d7f6:ff03:bf5d ${gerrit_ssh_host_key}",
+    known_hosts_content      => "review.openstack.org,23.253.232.87,2001:4800:7815:104:3bc3:d7f6:ff03:bf5d ${gerrit_ssh_host_key}\ngit.opendaylight.org,52.35.122.251,2600:1f14:421:f500:7b21:2a58:ab0a:2d17 ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBJbPbJvIQZ4BzdfV13OUj+R4pGwX7tLv7DG8LzzEw3XSAUmHx50E4ObKrpTMEAUZ3Gt6QrrnVr1VXrs+134m7IY=",
     zuul_ssh_private_key     => $zuul_ssh_private_key,
     zuul_url                 => $zuul_url,
     git_email                => $git_email,