Make ./clean.sh work in more situations

When transitioning between different wsgi modes, or service modes, we
should really safely stop and cleanup things that are started in any
service mode, which makes it easier to ensure that we don't leave
things around from past runs.

Change-Id: I33acbee39e1a2da2bfd79a5dd54b84a12a778be1
diff --git a/lib/placement b/lib/placement
index 2c51ed6..ad12824 100644
--- a/lib/placement
+++ b/lib/placement
@@ -69,6 +69,7 @@
 # cleanup_placement() - Remove residual data files, anything left over from previous
 # runs that a clean run would need to clean up
 function cleanup_placement {
+    sudo rm -f $(apache_site_config_for nova-placement-api)
     sudo rm -f $(apache_site_config_for placement-api)
 }