Nova does not need to authenticate with Neutron as admin to get the list of API extensions.

[Phil Day]

Currently _refresh_neutron_extensions_cache() always authenticates with Neutron using the Configured Neutron admin credentials because it doesn’t have access to the calling context. But it’s actually always called when a valid context exists, and the call to get the list of extensions is not itself an admin operation. By passing the context down we can avoid this additional Authentication step.

[Phil Day (philip-day)]

https://review.openstack.org/#/c/56258/

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/56258
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=af067cffbfbb3e18c48e52b761d371f91bd8c287
Submitter: Jenkins
Branch: master

commit af067cffbfbb3e18c48e52b761d371f91bd8c287
Author: Phil Day <email address hidden>
Date: Wed Nov 13 17:10:42 2013 +0000

    Remove admin auth when getting the list of Neutron API extensions.

    Currently _refresh_neutron_extensions_cache() always authenticates
    with Neutron using the configured Neutron admin credentials because
    it doesn't have access to the calling context. But it's actually
    always called when a valid context exists, and the call to get the
    list of extensions is not itself an admin operation. By passing
    the context down we can avoid this additional authentication step.

    Change-Id: I9e7d9c5e424a6b39c8f8ee1c79f5fd8f48ad81a2
    Closes-Bug: 1250850