Bug 921257 - Warn users to change the default AUTH_SALT
Lots of oo-accept-broker fixes

This script was totally broken.

* Bundler was not being used correctly
* The config format for a few of the plugins changed
* Unknown plugins were marked as failures.  Now we just label that as a notice
  since we expect people to write plugins.
Merge pull request #1637 from brenton/BZ921257

Bug 921257 - Warn users to change the default AUTH_SALT