Create the ara-plugins project

This follows up on the change to create the ara-web project [1] and the
split of the ARA components in the upcoming release.

We are splitting the components in order to allow indenpendant
installation and deployment for each component.

The ara-plugins project will contain the plugins, modules and callbacks
for ARA.

[1]: https://review.openstack.org/#/c/528358/

Change-Id: I2d345414d16d4f08f9d4570a92f24b7a43203e66

gerrit/projects.yaml

@@ -1043,6 +1043,12 @@
     - ara
   description: Client interfaces, modules and libraries for ARA Records Ansible
   acl-config: /home/gerrit2/acls/openstack/ara.config
+- project: openstack/ara-plugins
+  use-storyboard: true
+  groups:
+    - ara
+  description: Plugins, modules and callbacks for ARA Records Ansible
+  acl-config: /home/gerrit2/acls/openstack/ara.config
 - project: openstack/ara-server
   use-storyboard: true
   groups:

gerritbot/channels.yaml

@@ -8,6 +8,7 @@ ara:
     - openstack/ansible-role-ara
     - openstack/ara
     - openstack/ara-clients
+    - openstack/ara-plugins
     - openstack/ara-server
     - openstack/ara-web
   branches:

zuul/main.yaml

@@ -241,6 +241,7 @@
           - openstack/api-wg
           - openstack/ara
           - openstack/ara-clients
+          - openstack/ara-plugins
           - openstack/ara-server
           - openstack/ara-web
           - openstack/arch-wg