Missing attempt to import necessary module for some drivers in ironic/drivers/fake.py

[Sergey Lupersolsky]

In https://github.com/openstack/ironic/blob/master/ironic/drivers/fake.py#L86, there needs to be code to try to import 'pyghmi something' similar to what is done in FakeSeaMicroDriver.

Also FakeIBootDriver needs to be fixed.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/121715

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/121715
Committed: https://git.openstack.org/cgit/openstack/ironic/commit/?id=70792910abac2bcf8e34113e496a76f47482538d
Submitter: Jenkins
Branch: master

commit 70792910abac2bcf8e34113e496a76f47482538d
Author: Sergey Lupersolsky <email address hidden>
Date: Mon Sep 15 23:20:49 2014 +0000

    Import modules for fake IPMINative/iBoot drivers

    The fake IPMINative and iBoot drivers are not attempting to import the
    necessary Python modules for proper operation.
    To fix the issue, this patch attempts to import 'pyghmi' for the fake
    IPMINative driver and 'iboot' for the fake iBoot driver. If the module
    that is attempted to be imported is not available, then a
    DriverLoadError is raised.

    Change-Id: I5085a45c867c339ef900d89b5c830467398b3db1
    Closes-Bug: 1362114