Add gitdm to openstack infrastructure.

Change-Id: Id19133976c2e4013655a88637cb241c18d67e5bb
Reviewed-on: https://review.openstack.org/27425
Reviewed-by: Jeremy Stanley <fungi@yuggoth.org>
Reviewed-by: Anita Kuno <anita.kuno@enovance.com>
Reviewed-by: Clark Boylan <clark.boylan@gmail.com>
Approved: James E. Blair <corvus@inaugust.com>
Reviewed-by: James E. Blair <corvus@inaugust.com>
Tested-by: Jenkins

modules/gerritbot/files/gerritbot_channel_config.yaml

@@ -13,6 +13,7 @@ openstack-infra:
       - openstack-infra/gerrit-trigger-plugin
       - openstack-infra/gerritbot
       - openstack-infra/gerritlib
+      - openstack-infra/gitdm
       - openstack-infra/git-review
       - openstack-infra/jeepyb
       - openstack-infra/jenkins-job-builder

modules/openstack_project/files/gerrit/acls/openstack-infra/gitdm.config

@@ -0,0 +1,13 @@
+[access "refs/heads/*"]
+        label-Approved = +0..+1 group gitdm-core
+        label-Code-Review = -2..+2 group gitdm-core
+[access "refs/tags/*"]
+        create = group gitdm-core
+        pushTag = group gitdm-core
+[project]
+        state = active
+[receive]
+        requireChangeId = true
+[submit]
+        mergeContent = true
+        action = cherry pick

modules/openstack_project/files/zuul/layout.yaml

@@ -1337,6 +1337,12 @@ projects:
     release:
       - openstack-qa-docs
 
+  - name: openstack-infra/gitdm
+    check:
+      - gate-noop
+    gate:
+      - gate-noop
+
   - name: openstack-infra/git-review
     check:
       - gate-git-review-pep8

modules/openstack_project/templates/review.projects.yaml.erb

@@ -28,6 +28,9 @@
 - project: openstack-infra/jeepyb
   upstream: git://github.com/emonty/gerritx.git
   description: Gerrit Project Builder Tools
+- project: openstack-infra/gitdm
+  description: A fork of Jonathan Corbet's gitdm for OpenStack
+  upstream: git://github.com/markmc/openstack-gitdm.git
 - project: openstack-infra/git-review
 - project: openstack-infra/jenkins-job-builder
 - project: openstack-infra/lodgeit