Allow overwrite of placement-api wsgi config

Use with_first_found on placement-api-wsgi to allow
overwrite from users and keep consistency with other
roles.

Change-Id: I11c84db6df1bb5be61db5b6b0adf8c160a2bd931
Closes-Bug: #1898766

ansible/roles/placement/tasks/config.yml

@@ -73,12 +73,16 @@
   vars:
     service: "{{ placement_services['placement-api'] }}"
   template:
-    src: "placement-api-wsgi.conf.j2"
+    src: "{{ item }}"
     dest: "{{ node_config_directory }}/placement-api/placement-api-wsgi.conf"
     mode: "0660"
   when:
     - inventory_hostname in groups[service.group]
     - service.enabled | bool
+  with_first_found:
+    - "{{ node_custom_config }}/placement/{{ inventory_hostname }}/placement-api-wsgi.conf"
+    - "{{ node_custom_config }}/placement/placement-api-wsgi.conf"
+    - "placement-api-wsgi.conf.j2"
   notify:
     - Restart placement-api container
 

releasenotes/notes/bug-1898766-ffc55c97230d8221.yaml

+---
+fixes:
+  - |
+    Add with_first_found on placement for placement-api wsgi configuration
+    to allow overwrite from users.
+    `LP#1898766 <https://launchpad.net/bugs/1898766>`__