duplicate __init__() in ExtensionResource

[Kun Huang]

Let's go in codes directly, to get resources from extension, the child class[0] has an __init__() to register itself, and the farther class [1]'s __init__() has already did this. If there are no some specified variables needed by child class, the child's __init__ could be removed. In <nova>/nova/api/openstack/compute/contrib/, nearly all of extensions class don't have such a duplicate __init__(). Removing the __init__() in child class could help keeping codes consistent and clean.

[0] https://github.com/openstack/nova/blob/master/nova/api/openstack/compute/contrib/fixed_ips.py#L88
[1] https://github.com/openstack/nova/blob/master/nova/api/openstack/extensions.py#L63

[Kun Huang (academicgareth)]

For example, floating_ip_dns.py[3] uses __init__ correctly because it needs another variable and doesn't do the duplicate thing.

https://github.com/openstack/nova/blob/master/nova/api/openstack/compute/contrib/floating_ip_dns.py#L289

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/65027

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/65027
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=521a03bb67724ab545430ea891eb6d6d90b992f5
Submitter: Jenkins
Branch: master

commit 521a03bb67724ab545430ea891eb6d6d90b992f5
Author: Kun Huang <email address hidden>
Date: Thu Jan 2 23:37:37 2014 -0500

    remove redundant __init__() overwriting when getting ExtensionResources

    As described in #1266344, some of child class in
    <nova>/nova/api/openstack/compute/contrib/ has overwrited __init__()
    without specified needs. Removing that could help keeps codes clean and
    consistent (nearly all others don't overwrite __init__()).

    Change-Id: I87dfd9c1622bc8250f620ef591391a0e98573f78
    Closes-Bug: #1266344