Panel visibility check for Aggregates is overriding the wrong method

[Lin Hua Cheng]

There are two patterns used in defined if panels are visible:
1. overriding allowed()

https://github.com/openstack/horizon/blob/master/openstack_dashboard/dashboards/project/firewalls/panel.py#L26

2. overriding can_access()

https://github.com/openstack/horizon/blob/master/openstack_dashboard/dashboards/admin/aggregates/panel.py#L26

One of this is wrong and must be consistent with the other.

According to the doc, can_access() is not supposed to overridden: https://github.com/openstack/horizon/blob/master/horizon/base.py#L114

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/142687

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/142687
Committed: https://git.openstack.org/cgit/openstack/horizon/commit/?id=9fae45cde101188c6541a951df78fb4e17c13822
Submitter: Jenkins
Branch: master

commit 9fae45cde101188c6541a951df78fb4e17c13822
Author: lin-hua-cheng <email address hidden>
Date: Wed Dec 17 22:33:42 2014 -0800

    Fix Firewalls panel to override the right method

    Instead of overriding can_acess(), the panel check should
    be overriding allowed() method instead. Overriding can_access()
    will disable caching for the method.

    Change-Id: Ibee85cdcf505e90d9faeb54dbab7216fc24c1b2c
    Closes-Bug: #1403701