Pin oswin-tests-tempest to 0.2.0 for Stein
Pin oswin-tests-tempest to 0.2.0 for Stein

We should not be tracking master for the project, and according to
[1], 0.2.0 is the right release.

[1] - https://releases.openstack.org/stein/index.html

Change-Id: I3bf0ae749633257401419e483a3a2f5f953dc7a5

redhat-openstack/rdoinfo