Add ze12.openstack.org

We believe the relative_priority change has altered our workload
such that we have smaller jobs starting more frequently.  Since
job starts are limited by the executors, we have developed a backlog
and need another executor to relieve the pressure.

Change-Id: I98052e0135c7ee615f1f187b9d0a250cdd1ff178

hiera/common.yaml

@@ -344,6 +344,7 @@ cacti_hosts:
 - ze09.openstack.org
 - ze10.openstack.org
 - ze11.openstack.org
+- ze12.openstack.org
 - zk01.openstack.org
 - zk02.openstack.org
 - zk03.openstack.org

inventory/openstack.yaml

@@ -1048,6 +1048,14 @@ all:
       private_v4: 10.209.160.69
       public_v4: 104.239.149.58
       public_v6: 2001:4800:7819:105:be76:4eff:fe04:4f0d
+    ze12.openstack.org:
+      ansible_host: 2001:4800:7818:104:be76:4eff:fe03:b582
+      location:
+        cloud: openstackci-rax
+        region_name: DFW
+      private_v4: 10.209.32.181
+      public_v4: 104.130.124.187
+      public_v6: 2001:4800:7818:104:be76:4eff:fe03:b582
     zk01.openstack.org:
       ansible_host: 2001:4800:7817:103:be76:4eff:fe04:e359
       location:

playbooks/group_vars/graphite.yaml

@@ -86,3 +86,6 @@ iptables_extra_allowed_hosts:
   - hostname: ze11.openstack.org
     port: 8125
     protocol: udp
+  - hostname: ze12.openstack.org
+    port: 8125
+    protocol: udp

playbooks/group_vars/logstash.yaml

@@ -101,3 +101,6 @@ iptables_extra_allowed_hosts:
   - protocol: tcp
     port: '4730'
     hostname: ze11.openstack.org
+  - protocol: tcp
+    port: '4730'
+    hostname: ze12.openstack.org

playbooks/group_vars/zuul-scheduler.yaml

@@ -36,6 +36,9 @@ iptables_extra_allowed_hosts:
   - protocol: tcp
     port: 4730
     hostname: ze11.openstack.org
+  - protocol: tcp
+    port: 4730
+    hostname: ze12.openstack.org
   - protocol: tcp
     port: 4730
     hostname: zm01.openstack.org