nodepool-builder: put container configs in /etc

Currently we deploy the openstacksdk config into ~nodepool/.config on
the container, and then map this directory back to /etc/openstack in
the docker-compose.  The config-file still hard-codes the
limestone.pem file to ~nodepool/.config.

Switch the nodepool-builder_opendev group to install to
/etc/openstack, and update the nodepool config file template to use
the configured directory for the .pem path.

Also update the testing paths.

Story: #2007407
Task: #39015
Change-Id: I9ca77927046e2b2e3cee9a642d0bc566e3871515

playbooks/group_vars/nodepool-builder_opendev.yaml

@@ -1,4 +1,4 @@
-openstacksdk_config_dir: /home/nodepool/.config/openstack
+openstacksdk_config_dir: /etc/openstack
-openstacksdk_config_owner: nodepool
+openstacksdk_config_owner: root
-openstacksdk_config_group: nodepool
+openstacksdk_config_group: root
 openstacksdk_config_template: clouds/nodepool_clouds.yaml.j2

playbooks/roles/nodepool-builder/templates/docker-compose.yaml.j2

@@ -12,12 +12,10 @@ services:
       - DEBUG=1
 
     volumes:
-      # NOTE(ianw): for non-containerised builds the base roles
-      # (configure-openstacksdk) have always deployed the cloud config
-      # in ~nodepool/.config.
-      - /home/nodepool/.config/openstack:/etc/openstack:ro
       # nodepool config
       - /etc/nodepool:/etc/nodepool:ro
+      # openstacksdk config
+      - /etc/openstack:/etc/openstack:ro
       # project-config
       - /opt/project-config:/opt/project-config:ro
       # dib temporary storage; see config in project-config

playbooks/templates/clouds/nodepool_builder_clouds.yaml.j2

@@ -3,7 +3,7 @@
 #
 # This file is deployed to nodepool builder hosts as
 #
-#   ~nodepool/.config/openstack/config/clouds.yaml
+#   {{ openstacksdk_config_dir }}/clouds.yaml
 #
 # and is used there to authenticate nodepool operations to clouds.
 # The naming should correspond that used in nodepool configuration
@@ -155,7 +155,7 @@ clouds:
     api_timeout: 60
     identity_api_version: 3
     floating_ip_source: None
-    cacert: /home/nodepool/.config/openstack/limestone_cacert.pem
+    cacert: '{{ openstacksdk_config_dir }}/limestone_cacert.pem'
   packethost:
     regions:
       - name: us-west-1

testinfra/test_nodepool.py

@@ -19,7 +19,12 @@ testinfra_hosts = ['nl01.openstack.org', 'nb01.openstack.org',
 
 
 def test_clouds_yaml(host):
-    clouds_yaml = host.file('/home/nodepool/.config/openstack/clouds.yaml')
+    if host.backend.get_hostname().endswith('openstack.org'):
+        cfg_file = '/home/nodepool/.config/openstack/clouds.yaml'
+    else:
+        cfg_file = '/etc/openstack/clouds.yaml'
+
+    clouds_yaml = host.file(cfg_file)
     assert clouds_yaml.exists
 
     assert b'password' in clouds_yaml.content