Ambiguous default direction for policy classifier

[Sumit Naiksatam]

When no direction is specified while creating a policy classifier, the semantics of the enforced direction may vary depending on the backend implementation. Its not clear to the user as to what behavior he should expect.

We should decide what the default direction should be (most likely "bi") when no direction is explicitly specified and persist that in the backend. The user will then clearly see this direction and there will not be any ambiguity.

[Sumit Naiksatam (snaiksat)]

CLI fixed by: https://review.openstack.org/#/c/246081

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/247785

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/kilo
Review: https://review.openstack.org/248326

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/juno
Review: https://review.openstack.org/248328

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/247785
Committed: https://git.openstack.org/cgit/openstack/group-based-policy/commit/?id=6bde94fa66dd1a3ac07b4cf1b63f20c10b39a502
Submitter: Jenkins
Branch: master

commit 6bde94fa66dd1a3ac07b4cf1b63f20c10b39a502
Author: Sumit Naiksatam <email address hidden>
Date: Thu Nov 19 13:15:01 2015 -0800

    Use default bi direction for classifier

    Change-Id: If6d7e9fafbf299201cf0d9f46432c2f7219e8e60
    Closes-bug: 1516803

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/248326
Committed: https://git.openstack.org/cgit/openstack/group-based-policy/commit/?id=801fbf908429e688c76c0552b84eaea797ff72bf
Submitter: Jenkins
Branch: stable/kilo

commit 801fbf908429e688c76c0552b84eaea797ff72bf
Author: Sumit Naiksatam <email address hidden>
Date: Thu Nov 19 13:15:01 2015 -0800

    Use default bi direction for classifier

    Change-Id: If6d7e9fafbf299201cf0d9f46432c2f7219e8e60
    Closes-bug: 1516803
    (cherry picked from commit 6bde94fa66dd1a3ac07b4cf1b63f20c10b39a502)

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/248328
Committed: https://git.openstack.org/cgit/openstack/group-based-policy/commit/?id=6bd348168a43d3288f0b15f93cf69751323397b2
Submitter: Jenkins
Branch: stable/juno

commit 6bd348168a43d3288f0b15f93cf69751323397b2
Author: Sumit Naiksatam <email address hidden>
Date: Thu Nov 19 13:15:01 2015 -0800

    Use default bi direction for classifier

    Change-Id: If6d7e9fafbf299201cf0d9f46432c2f7219e8e60
    Closes-bug: 1516803
    (cherry picked from commit 6bde94fa66dd1a3ac07b4cf1b63f20c10b39a502)
    (cherry picked from commit 801fbf908429e688c76c0552b84eaea797ff72bf)