swift middleware roles operation should be case insensitive

[Chmouel Boudjnah]

Following a thread on the mailing list :

https://lists.launchpad.net/openstack/msg13074.html

we are doing case insensitive roles comparaison in OpenStack and the swift middleware should do the same.

[Alan Pevec (apevec)]

swift middleware moved to Swift:
 https://github.com/openstack/swift/commit/afa4f70024be30cb1a0b84b9744f044f2532904f

keystone/middleware/swift_auth.py should probably be removed in Grizzly,
it has been neglected since that move

[Kun Huang (academicgareth)]

nice talk in https://lists.launchpad.net/openstack/msg13074.html
I think I agree insensitive case in middleware.
Their points are 'Admin' and 'admin' is different string but same meaning for role. Using insensitive case could tolerate human error. For example, user maybe set like this "operator_roles = Admin, swiftoperator"

BTW, I didn't found keystone lower its role string before send its data.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/24142

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/24142
Committed: http://github.com/openstack/swift/commit/7dd966192a43f9937c3e9ac576708447634cdc00
Submitter: Jenkins
Branch: master

commit 7dd966192a43f9937c3e9ac576708447634cdc00
Author: Kun Huang <email address hidden>
Date: Mon Mar 18 13:15:09 2013 +0800

    Use role in insensitive case in keystoneauth.

    Using insensitive case could tolerate human error. For example,
    user maybe set like this "operator_roles = Admin, swiftoperator"

    - also fix a mistake in test, ['admin'] is correct value for roles, not
      'admin' (it will be looped as ['a', 'd', 'm', 'i', 'n'])
    - add test for insensitive cases

    Fixes: bug #1013120
    Change-Id: I56d71da8bc503e48e92dd743692ba6fc237f029e

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: milestone-proposed
Review: https://review.openstack.org/25493

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/25493
Committed: http://github.com/openstack/swift/commit/80ea2d7f6c264a4fdbd90cc83e54e8e901cd9508
Submitter: Jenkins
Branch: milestone-proposed

commit 80ea2d7f6c264a4fdbd90cc83e54e8e901cd9508
Author: Kun Huang <email address hidden>
Date: Mon Mar 18 13:15:09 2013 +0800

    Use role in insensitive case in keystoneauth.

    Using insensitive case could tolerate human error. For example,
    user maybe set like this "operator_roles = Admin, swiftoperator"

    - also fix a mistake in test, ['admin'] is correct value for roles, not
      'admin' (it will be looped as ['a', 'd', 'm', 'i', 'n'])
    - add test for insensitive cases

    Fixes: bug #1013120
    Change-Id: I56d71da8bc503e48e92dd743692ba6fc237f029e
    (cherry picked from commit 7dd966192a43f9937c3e9ac576708447634cdc00)