Changes to Create an ATC with steps and assertions

removed the required property atc/priority from the response with the 201 status

removed the required property atc/technique from the response with the 201 status

removed the request property priority

removed the request property technique

added the new optional request property priority

added the new optional request property technique

added the required property atc/priority to the response with the 201 status

added the required property atc/technique to the response with the 201 status

added the new test_outside_plan_project enum value to the error/code response property for the response status 400

added the new test_outside_plan_project enum value to the error/code response property for the response status 401

added the new test_outside_plan_project enum value to the error/code response property for the response status 403

added the new test_outside_plan_project enum value to the error/code response property for the response status 404

added the new test_outside_plan_project enum value to the error/code response property for the response status 409

added the new test_outside_plan_project enum value to the error/code response property for the response status 422

removed the test_outside_plan_project enum value from the error/code response property for the response status 400

removed the test_outside_plan_project enum value from the error/code response property for the response status 401

removed the test_outside_plan_project enum value from the error/code response property for the response status 403

removed the test_outside_plan_project enum value from the error/code response property for the response status 404

removed the test_outside_plan_project enum value from the error/code response property for the response status 409

removed the test_outside_plan_project enum value from the error/code response property for the response status 422