dbapi should support filtering from a list

[Ramakrishnan G (rameshg87)]

Currently our dbapi doesn't support filtering out nodes whose values are in a list.

For example,

If I want all nodes reserved by conductors [c1,c2,...cn], there is no way, but to get the list of all nodes (matching other conditions) and iterate and do it in python. It would be much better if we supported a list so that we can get it done by the db itself.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/210325

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/210325
Committed: https://git.openstack.org/cgit/openstack/ironic/commit/?id=1669d4d75f95f148503f9a3203b60b3af58f0f59
Submitter: Jenkins
Branch: master

commit 1669d4d75f95f148503f9a3203b60b3af58f0f59
Author: Ramakrishnan G <email address hidden>
Date: Fri Aug 7 10:46:27 2015 +0000

    Add better dbapi support for querying reservation

    This commit adds support for querying reservation of
    a node by a list of desired conductor names. It adds
    a new filter 'reserved_by_any_of' which is expected to
    be a list of conductors.

    Change-Id: I149eae115fd3267e9b9efdb99aca445e7b18ba03
    Closes-Bug: 1472212