Do not merge extra_files over main bespin.yml
Do not merge extra_files over main bespin.yml

Currently the collector adds bespin.yml configuration and then merges
extra_files over the top (in order). This functionality is counter
intuitive to new users as the primary configuration should be a source
of truth. YAML entries defined in the primary configuration should
override all others.

Change the load of additional configuration files (if specified) to
happen prior to the main bespin.yml

delfick/bespin,realestate-com-au/bespin,realestate-com-au/bespin,delfick/bespin