Add specific values to specific fields in get_random_object_fields()

[Lujin Luo]

In current neutron.tests.unit.objects.test_router.FloatingIPDbObjectTestCase.test_update_objects code path, all the field values are generated randomly by get_random_object_fields(). However in several cases, the actual object is required to fulfill Foreign Key requirement.

An example here is FloatingIP OVO. It updates router_id and fixed_port_id, but without actual objects we will see the following errors.

oslo_db.exception.DBReferenceError: (sqlite3.IntegrityError) FOREIGN KEY constraint failed [SQL: u'UPDATE floatingips SET project_id=?, floating_ip_address=?, floating_network_id=?, floating_port_id=?, fixed_port_id=?, fixed_ip_address=?, router_id=?, last_known_router_id=?, status=? WHERE floatingips.id = ?'] [parameters: (u'082f1ab417', '10.81.171.5', '7290820a-186b-43d5-bdb6-b06390d62f96', '96a2689b-f31d-4660-9253-cb27d1d44ffc', '323da865-b33d-48e9-b5c2-650cb7ead20f', '10.186.214.129', '0b093c10-5947-44b6-9c11-3484ef7565fc', 'fc9e158f-522f-42b2-9ce4-49a88e22d535', u'DOWN', u'11d0ed9e-191a-41b6-839b-107257559929')]

Reference to more logs can be found in https://review.openstack.org/#/c/481972

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/485082

[Ihar Hrachyshka (ihar-hrachyshka)]

This will probably also fix https://bugs.launchpad.net/neutron/+bug/1704000

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/485082
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=d24abbe792c7ddb911c4f7ffee5c3b2fced4650b
Submitter: Jenkins
Branch: master

commit d24abbe792c7ddb911c4f7ffee5c3b2fced4650b
Author: Lujin <email address hidden>
Date: Wed Jul 19 16:34:33 2017 +0900

    Add specific values to specific fields in get_random_object_fields()

    Generally, get_random_object_fields() generates random values to
    update OVO objects. However, in some cases, specific values are
    required, otherwise Foreign Key violation is triggered.

    This patch adds a dictionary to hold all updatable fields which
    require specific values.

    Change-Id: I6da72c3ac43f01b5ffa21f128fb3eeaf9fd0a503
    Closes-Bug: #1705187

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/neutron 11.0.0.0b3 development milestone.