Update test cases for test_bay.py and test_baymodel.py

[Guangya Liu (Jay Lau)]

This is a follow up for the following gerrit review:
https://review.openstack.org/#/c/208137/1/magnum/tests/unit/api/controllers/v1/test_bay.py
https://review.openstack.org/#/c/208137/1/magnum/tests/unit/api/controllers/v1/test_baymodel.py

Planning to use following code style to make the code looks more cleaner.

- self.assertIn('name', response)
- self.assertIn('baymodel_id', response)
- self.assertIn('node_count', response)
- self.assertIn('status', response)
- self.assertIn('discovery_url', response)
- self.assertIn('api_address', response)
- self.assertIn('node_addresses', response)
+ for key in ("name", "baymodel_id", "node_count", "status",
+ "api_address", "discovery_url", "node_addresses"):
+ self.assertIn(key, response)

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/209078
Committed: https://git.openstack.org/cgit/openstack/magnum/commit/?id=d3a6091519164cca4350d9ab082331ca05421dcf
Submitter: Jenkins
Branch: master

commit d3a6091519164cca4350d9ab082331ca05421dcf
Author: Jay Lau (Guangya Liu) <email address hidden>
Date: Tue Aug 4 09:56:55 2015 -0400

    Update test cases for test_bay.py and test_baymodel.py

    This is a follow up for the following gerrit review:
    https://review.openstack.org/#/c/208137/1/magnum/tests/unit/api/controllers/v1/test_bay.py
    https://review.openstack.org/#/c/208137/1/magnum/tests/unit/api/controllers/v1/test_baymodel.py

    Closes-Bug: #1481765

    Change-Id: Ifa134b6da6fadf40e388aee2c6168d777e112cab