Two limitations found during use of generating acceptance test for our service broker

[tao-xinxiu]

Thanks for your contribution to this great project. We are really interested in using it for writing automatic acceptance and integration test.

After a preliminary use of cf-swagger for generating acceptance test for our cloud foundry service broker, we have found some limitations as follows:

• Our service broker requires authorization for access which is currently not easy to be specified.
  Maybe it could be enabled by add request.SetBasicAuth("username", "password") in utils/server_utils.go which could take the username and password from configure json file.
• The broker server url and port is hardcoded instead of being taken from the json file of service broker