Notify not only cinder service, but also Apache

Apache needs to be notified as well in case the API is being served in
that context, otherwise config changes would not take effect without
manual intervention.

Change-Id: If5e7c14d59843ee7c813eb1df8d7131e002dbd22
(cherry picked from commit 2cd58b8fb0)

manifests/api.pp

@@ -268,6 +268,7 @@ class cinder::api (
       enable => false,
       tag    => ['cinder-service'],
     }
+    Service <| title == 'httpd' |> { tag +> 'cinder-service' }
 
     # we need to make sure cinder-api/eventlet is stopped before trying to start apache
     Service['cinder-api'] -> Service[$service_name]

releasenotes/notes/restart-apache-6b5d1e4ef37b7ff6.yaml

@@ -0,0 +1,5 @@
+---
+fixes:
+  - |
+    Notify Apache in case the API is served in that context when the API is
+    supposed to be restarted, for instance due to configuration changes.