Changes to Get Philter's limits and the caller's capabilities.

added the optional property customLists/descriptionMaxLength to the response with the 200 status

added the non-success response with the status 404

added the optional property field to the response with the 400 status

added the optional property field to the response with the 401 status

added the optional property field to the response with the 413 status

added the optional property field to the response with the 415 status

added the optional property field to the response with the 500 status

added the optional property field to the response with the 503 status

added the optional property reason to the response with the 400 status

added the optional property reason to the response with the 401 status

added the optional property reason to the response with the 413 status

added the optional property reason to the response with the 415 status

added the optional property reason to the response with the 500 status

added the optional property reason to the response with the 503 status

added the optional property policies/reservedNames to the response with the 200 status

endpoint added