Fix Skyline API Server TLS configuration

Closes-Bug: #1998417

Change-Id: Ib6c725880caaa7f39bb269bd8398f3894eb033c5

ansible/roles/skyline/templates/gunicorn.py.j2

@@ -20,6 +20,10 @@ timeout = {{ skyline_gunicorn_timeout }}
 keepalive = {{ skyline_gunicorn_keepalive }}
 reuse_port = True
 proc_name = "{{ project_name }}"
+{% if skyline_ssl_certfile and skyline_ssl_keyfile %}
+keyfile = "{{ skyline_ssl_keyfile }}"
+certfile = "{{ skyline_ssl_certfile }}"
+{% endif %}
 
 logconfig_dict = {
     "version": 1,