Some explanatory notes.

roles/osbs-client/files/README

@@ -0,0 +1,7 @@
+The site-customize file here additionally disables or enables plugins on top of
+the default set.
+
+The default set ships with osbs-client and can be found here:
+https://github.com/projectatomic/osbs-client/blob/master/inputs/prod_inner.json
+
+See also: https://github.com/projectatomic/osbs-client/blob/master/docs/build_process.md

roles/osbs-client/tasks/main.yml

@@ -12,6 +12,8 @@
     path: "/etc/osbs/input/"
     state: directory
 
+# This overrides defaults which are set in
+# https://github.com/projectatomic/osbs-client/blob/master/inputs/prod_inner.json
 - name: Upload OSBS Site Customizations plugin conf
   copy:
     src: "osbs-site-customize.json"