seamicro.vendor_passthru.validate has broken method definition

[aeva black]

If the python-seamicroclient library is installed and unit tests are run, the seamicro unit tests will fail with

TypeError: validate() takes exactly 2 arguments (4 given)

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/83598

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/83598
Committed: https://git.openstack.org/cgit/openstack/ironic/commit/?id=3477ad215ea40618413bf8964af995014d5022da
Submitter: Jenkins
Branch: master

commit 3477ad215ea40618413bf8964af995014d5022da
Author: Devananda van der Veen <email address hidden>
Date: Thu Mar 27 14:30:10 2014 -0700

    Fix seamicro validate() method definition

    The base class definition of vendor_passthru.validate() was changed
    in 48a4223f so that it also required a 'task' parameter, but
    the seamicro.vendor_passthru driver had not landed yet. Between that
    change and the time the seamicro driver was landed, another change
    caused us to stop running unit tests on third-party drivers.

    So, we didn't notice that the seamicro.vendor_passthru.validate() method
    definition was incompatibly broken.

    Closes-bug: #1298648

    Change-Id: I9eab4c1d1be0546a0cdbf40759e88bb22f5015d2