Bump up ipa-docker-test-runner version

Reviewed-By: Stanislav Laznicka <slaznick@redhat.com>
Reviewed-By: Fraser Tweedale <ftweedal@redhat.com>

.travis.yml

@@ -18,7 +18,7 @@ before_install:
     - pip install pep8
     - >
       pip3 install
-      git+https://github.com/freeipa/ipa-docker-test-runner@release-0-2-0
+      git+https://github.com/freeipa/ipa-docker-test-runner@release-0-2-1
 
 script:
     - >