Specify log file name for Nova API

When only the directory is specified, separate log files
are created for the Nova API / metadata services with a
-wsgi postfix. This affects the 'programname' field in
Fluentd which affects the processing of these logs. This
is a regression.

When the log file name is specified, the directory is
not required.

Closes-Bug: #1950185
Change-Id: I8fec8b787349f83c05d8af7f52fc58da7c3e9cc4

ansible/roles/nova/templates/nova.conf.j2

@@ -2,9 +2,12 @@
 [DEFAULT]
 debug = {{ nova_logging_debug }}
 
-log_dir = /var/log/kolla/nova
 {% if service_name == "nova-super-conductor" %}
 log_file = /var/log/kolla/nova/nova-super-conductor.log
+{% elif service_name == "nova-api"  %}
+log_file = /var/log/kolla/nova/nova-api.log
+{% else %}
+log_dir = /var/log/kolla/nova
 {% endif %}
 
 state_path = /var/lib/nova

releasenotes/notes/bugfix-nova-api-log-file-name-9a377525e73012de.yaml

@@ -0,0 +1,7 @@
+---
+fixes:
+  - |
+    Fixes an issue where the Nova API logs were written to
+    files ending with `-wsgi.log` which affected the processing of
+    these logs in the Fluentd pipeline.
+    `LP#1950185 <https://bugs.launchpad.net/kolla-ansible/+bug/1950185>`__