check whether V2 token is revoked has been performed twice

[Dave Chen]

Check whether V2 token is revoked or not has been performed twice,

First check is here,
https://github.com/openstack/keystone/blob/master/keystone/token/provider.py#L247

Then in the func of _is_valid_token(token), the code check it again,
https://github.com/openstack/keystone/blob/master/keystone/token/provider.py#L357

This is unnecessary and has been removed in the validate_v3_token(self, token_id), need remove this code in validate_v2_token(...) as well.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/150022

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/150022
Committed: https://git.openstack.org/cgit/openstack/keystone/commit/?id=2c525a2a35cce99c60b96b79b110e20ac1106098
Submitter: Jenkins
Branch: master

commit 2c525a2a35cce99c60b96b79b110e20ac1106098
Author: Dave Chen <email address hidden>
Date: Tue Jan 27 04:51:30 2015 +0800

    Remove duplicate token revocation check

    Check whether V2 token is revoked has been performed twice, the first
    check is in the method of validate_v2_token(...), and then check in
    method _is_valid_token(...) again, remove the duplicated one.

    Change-Id: Iaffe6473f5277f10540d5e1647c69d282250becf
    Closes-Bug: #1414627