Fix placement-api WSGI error

RDO is packaging placement-api with bundled httpd config
and it conflicts with kolla-ansible generated one.

Change-Id: I018a4ed1b2282e8a789b63e3893e61db2fde8cf2

ansible/roles/placement/templates/placement-api.json.j2

@@ -17,7 +17,7 @@
         }{% endif %},
         {
             "source": "{{ container_config_directory }}/placement-api-wsgi.conf",
-            "dest": "/etc/{{ apache_conf_dir }}/placement-api-wsgi.conf",
+            "dest": "/etc/{{ apache_conf_dir }}/00-placement-api.conf",
             "owner": "placement",
             "perm": "0600"
         },