cachemanagement middleware requires keystone -- remove paste section cachemanagement

[Jay Pipes]

This section in the glance-api-paste.ini file:

# Use the following pipeline to enable the Image Cache Management API
# i.e. in glance-api.conf:
# [paste_deploy]
# flavor = cachemanagement
#
[pipeline:glance-api-cachemanagement]
pipeline = versionnegotiation context cache cachemanage rootapp

Doesn't make any sense, has confused users, and should be removed. The reason is that the cachemanagement middleware **requires** Keystone (since cachemanagement is an admin-only API) and therefore the keystone+cachemanagement section is the only one that should be listed.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/6407

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/6763

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/6763
Committed: http://github.com/openstack/glance/commit/c449d76ff2e19fecf46f0830cefbc3255a29fb1c
Submitter: Jenkins
Branch: master

commit c449d76ff2e19fecf46f0830cefbc3255a29fb1c
Author: Jay Pipes <email address hidden>
Date: Tue Apr 24 13:06:44 2012 -0400

    Fixes LP #978119 - cachemanagement w/o keystone

    Removes section of glance-api-paste.ini that refers to
    an improper cachemanagement middleware without keystone

    Change-Id: I86a1a84aac16a8345b06ce83562f4508b49dac10