[RFE] Add Keystone audit middleware support to Ironic

[lokesh s]

This adds the audit support middleware to Ironic, allowing
the middleware send two notifications per API request,
one for the request and another for the response.

AuditMiddleware docs:
   http://docs.openstack.org/developer/keystonemiddleware/audit.html

[lokesh s (lokesh-s)]

https://review.openstack.org/#/c/272658/

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/272658
Committed: https://git.openstack.org/cgit/openstack/ironic/commit/?id=295b35c48f7dcc2983a19d4114254bea85239b3a
Submitter: Jenkins
Branch: master

commit 295b35c48f7dcc2983a19d4114254bea85239b3a
Author: Lokesh S <email address hidden>
Date: Tue Jan 26 17:08:42 2016 +0000

    Add support for the audit middleware

    This adds support for the audit middleware to Ironic, allowing
    the middleware to send two notifications per API request,
    one for the request and another for the response.
    This adds an option to enable or disable audit middleware.
    Also to properly audit API requests passing conf options
    via audit map file.

    AuditMiddleware docs:
       http://docs.openstack.org/developer/keystonemiddleware/audit.html

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

    Closes-Bug: #1540232
    Change-Id: I6de4751aa6b25e8457cae3eeab95a15f417662c5

[Davanum Srinivas (DIMS) (dims-v)]

This issue was fixed in the openstack/ironic 6.1.0 release.