Lost control of nodes with amt driver after user reboot

[Tan Lin]

Problem:
There are two cases of reboot:
1. Reboot by Ironic.
2. Reboot by users who logging into the instance.
There is no problem for case one. The issue is in case two. And this is something related to AMT firmware. So the solution is deploy amt_driver with localboot.

Why:
This is because AMT firmware doesn't support setting pxe as boot device persistent. Once reboot by the user, the node will boot from disk.

Solution:
Enable pxe_amt driver with localboot and enroll nodes with boot_option=local

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/167975

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/167975
Committed: https://git.openstack.org/cgit/openstack/ironic/commit/?id=2a4e81c73e9478a89cc8fd0a9eeb0c5ad9809e4b
Submitter: Jenkins
Branch: master

commit 2a4e81c73e9478a89cc8fd0a9eeb0c5ad9809e4b
Author: Lin Tan <email address hidden>
Date: Mon Mar 30 17:21:55 2015 +0800

    Enable pxe_amt driver with localboot

    Enable pxe_amt driver with localboot

    Partial-Bug: #1436824
    Change-Id: I2818647b0c2518ba2645843c287b093137ea7ece

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/169606

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/169606
Committed: https://git.openstack.org/cgit/openstack/ironic/commit/?id=fe1e2b08c25ebdf0f82689d8651c34f2aafe9212
Submitter: Jenkins
Branch: master

commit fe1e2b08c25ebdf0f82689d8651c34f2aafe9212
Author: Lin Tan <email address hidden>
Date: Wed Apr 1 11:47:16 2015 +0800

    Improve AMT driver doc

    It is recommended that users should deploy AMT nodes with local boot.

    Co-Authored-By: Chris Krelle <email address hidden>

    Close-Bug: #1436824
    Change-Id: I536c587008bb68950ec7acfcf16c8ae28f9560bc