Install clouds.yaml on zuul-launcher

And configure it with a connection to rax-flex for testing.

Change-Id: I127ba4a2cf33f7ffcecdf81acfc5c38db565da82

inventory/service/group_vars/zuul.yaml

@@ -45,3 +45,13 @@ zuul_connections:
     user: 'git-infra-root.openstack.org'
     stream_events: 'false'
     auth_type: 'basic'
+
+  - name: 'raxflex'
+    driver: 'openstack'
+
+openstacksdk_config_dir: /etc/openstack
+openstacksdk_config_owner: root
+openstacksdk_config_group: "{{ zuul_group }}"
+# This filename is correct: while we have both nodepool and
+# zuul-launcher, they share the same clouds.yaml file.
+openstacksdk_config_template: clouds/nodepool_clouds.yaml.j2

inventory/service/groups.yaml

@@ -116,6 +116,9 @@ groups:
   nodepool:
     - nb[0-9]*.opendev.org
     - nl[0-9]*.open*.org
+    # Add the zuul-launchers so they have access to the clouds.yaml
+    # related group-vars.
+    - zl[0-9]*.opendev.org
   nodepool-builder:
     - nb[0-9]*.opendev.org
   nodepool-launcher:

playbooks/roles/zuul-launcher/files/docker-compose.yaml

@@ -10,6 +10,7 @@ services:
     user: zuul
     volumes:
       - /etc/zuul:/etc/zuul
+      - /etc/openstack:/etc/openstack
       - /home/zuuld:/home/zuul
       - /var/lib/zuul:/var/lib/zuul
       - /var/log/zuul:/var/log/zuul

playbooks/service-zuul.yaml

@@ -18,6 +18,7 @@
 - hosts: "zuul-launcher:!disabled"
   name: "Configure zuul launcher"
   roles:
+    - configure-openstacksdk
     - zuul-launcher
 
 - hosts: "zuul-merger:!disabled"