Comment 2 for bug 1683820

Reviewed: https://review.openstack.org/457661
Committed: https://git.openstack.org/cgit/openstack/rally/commit/?id=055446b060d0b6a4b5e0a33bd6b4fd0d9bdada9a
Submitter: Jenkins
Branch: master

commit 055446b060d0b6a4b5e0a33bd6b4fd0d9bdada9a
Author: Daniel Gonzalez <email address hidden>
Date: Tue Apr 18 16:07:32 2017 +0200

    Make openrc deployment file work with keystone v3

    When using a deployment with keystone v3 the env variable
    OS_IDENTITY_API_VERSION=3 is not written to ~/.rally/openrc.
    This causes requests by the openstack cli to fail unless the user sets
    that variable manually.
    This patch fixes this issue by writing OS_IDENTITY_API_VERSION to the
    openrc file when using a deployment.

    Closes-Bug: #1683820

    Change-Id: I591eeacdd96e71d13561a7edade297223da86f73