v2 and v3 get catalog pass unused metadata parameter

[Henry Nash]

Both the v2 and v3 get catalog calls take an optional parameter called 'metadata' - but this is never used. It should be removed.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/166837

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/166837
Committed: https://git.openstack.org/cgit/openstack/keystone/commit/?id=14b7fcf09cc9190bee7c117f0255be27a5eedd13
Submitter: Jenkins
Branch: master

commit 14b7fcf09cc9190bee7c117f0255be27a5eedd13
Author: Henry Nash <email address hidden>
Date: Mon Mar 23 13:26:49 2015 +0000

    Remove unused metadata parameter from get_catalog methods

    The get_catalog and get_v3_catalog manager & driver methods
    took an optional "metadata" parameter, although it was never
    used. This patch removes it.

    Closes-bug: 1435312
    Change-Id: Ief24b75fc47471e7c9132975bc04373c75d557e1