Remove custom auth check from resource code

[Arvind Tiwari]

This has to be done by policy engin

        # Verify keystone_id matches the tenant ID.
        if keystone_id and keystone_id != ctx.tenant:
            _authorization_failed(u._("URI tenant does not match "
                                      "authenticated tenant."), req, resp)

[John Wood (john-wood-w)]

This is more of a blueprint than a bug per se, but makes sense otherwise.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/81310

[John Wood (john-wood-w)]

Closing this bug out, as a blueprint supercedes this one: https://blueprints.launchpad.net/barbican/+spec/policy-target-support

[OpenStack Infra (hudson-openstack)]

Change abandoned by Arun Kant (<email address hidden>) on branch: master
Review: https://review.openstack.org/81310
Reason: Simplifying approach to implement target support with a new review. Approach is similar to what nova does, get target data only from request context.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/100376

[OpenStack Infra (hudson-openstack)]

Change abandoned by Arun Kant (<email address hidden>) on branch: master
Review: https://review.openstack.org/100376
Reason: Target support is used in other openstack services but for now, barbican community does not want this feauture. So for now, closing it.