Range() in for loop need a refactor

[Wu Wenxiang]

In some files, range was called as:
    for i in range(0, 10):
        pass
Actually the start index arg was useless, since its defaultvalue is 0.
They should be refactor as:
    for i in range(10):
        pass

[Wu Wenxiang (wu-wenxiang)]

https://review.openstack.org/#/c/61100/

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/61100
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=74f0b74b55c97dda1ffd84a6fcab3f7c6478b50f
Submitter: Jenkins
Branch: master

commit 74f0b74b55c97dda1ffd84a6fcab3f7c6478b50f
Author: Wu Wenxiang <[e-mail]>
Date: Tue Dec 10 20:42:07 2013 +0800

    Remove start index 0 in range()

    Remove the useless arg ("start index" = 0) in files, since its default
    value is 0, to make code cleaner.

    Fixes bug #1259560

    Change-Id: Id595630f97b21cc84aefc39b31e7f09f5fb8deb9