Added test script, configs, and canned responses.
Added a response for calls to endpoints.
Improved endpoint logic and added xml response.
Just test the auth-z filter, and only test against 413's in the various stages of authorization.
Filled in other test cases. Also test explanation.
Re-worked test cases.
Merge pull request #556 from richard-sartor/d-13211-auxiliary-errors

Tests for "D-13211  Returning 403 Instead of 500"