pyyaml dep set to version 5.1.1 (#2012)
pyyaml dep set to version 5.1.1 (#2012)

* used different versions of pyyaml for different python versions

Signed-off-by: Josef Hak <61dce8dc32a68b6793698881bfd9d244cf5dfc41@redhat.com>

* removed pyyaml dep version for python >= 2.7

Signed-off-by: Josef Hak <61dce8dc32a68b6793698881bfd9d244cf5dfc41@redhat.com>

RedHatInsights/insights-core,RedHatInsights/insights-core