Comment 0 for bug 1491227

https://review.openstack.org/214085
commit 4a18f7d3bafcdbede48500aac389e0a770b8e6a8
Author: John Garbutt <email address hidden>
Date: Thu Aug 27 11:15:54 2015 +0900

    api: use v2.1 only in api-paste.ini

    I have taken a look at:
    * removed /v3
    * /v2 and /v1.1 now uses v2.1 legacy mode
    * add deprecation warnings for old v2 code and ec2
    * ensure legacy v2 code is not used by default

    DocImpact
    UpgradeImpact

    Depends-On: I513b54eeacee1486ea11b85913ab2d21727fc5f9
    dropping a tempest test that assumes certain validation order

    Change-Id: I94b1305882598cc259a267dc8e954ab242baf7d1