pecan doesn't work with dhcp agent scheduler extension

[Kevin Benton]

pecan can't dispatch requests to extensions that defined their own controllers. An example of this is the dhcp agent scheduler extension. We need to provide an automatic shim layer to be compatible with these old extensions.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/267985
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=665942866940fc474a3b122828ccb2081e975215
Submitter: Jenkins
Branch: master

commit 665942866940fc474a3b122828ccb2081e975215
Author: Brandon Logan <email address hidden>
Date: Fri Jan 15 01:29:22 2016 -0600

    Pecan routing for agent schedulers

    For pecan to support existing agent scheduler controllers, a couple of shim
    pecan controllers need to be added. These shim controllers will be used if
    there are extensions that have legacy controllers that have not been
    registered. The shim controller is just a passthrough to those legacy
    controllers. This may have the added benefit of support existing out of
    tree extensions that have defined their legacy extension controllers the
    same way.

    Changes to how the router(s) controllers determines whether something
    is a member action has been changed a bit to support this.

    Closes-Bug: #1552978
    Co-Authored-By: Kevin Benton <email address hidden>
    Change-Id: Icec56676d83b604c3db3377838076d6429d61e48

[Thierry Carrez (ttx)]

This issue was fixed in the openstack/neutron 8.0.0.0rc1 release candidate.