Changes to List a project's environments

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

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

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 environment_invalid enum value to the error/code response property for the response status 400

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

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

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

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

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

added the non-success response with the status 403