ironic.tests.base.TestCase uses database fixture while lots of tests don't need it

[Vladyslav Drok]

ironic.tests.base.TestCase uses database fixture while lots of tests don't need it. This fixture should be moved to a separate test case.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/125361

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/125361
Committed: https://git.openstack.org/cgit/openstack/ironic/commit/?id=d45eae7fe12bbdf3a47b151ad025d564fbdf2a3f
Submitter: Jenkins
Branch: master

commit d45eae7fe12bbdf3a47b151ad025d564fbdf2a3f
Author: Vladyslav Drok <email address hidden>
Date: Wed Oct 1 15:55:37 2014 +0300

    Move database fixture to a separate test case

    This change moves database fixture from ironic.tests.base.TestCase to
    ironic.tests.db.base.DbTestCase and adds dbapi field there. Also it
    adds ironic admin context to ironic.tests.base.TestCase, as context
    may be used without db fixture.

    Closes-bug: #1376285

    Change-Id: I008e44da315767afb6282000a01f0b39698f9768