PyTest 5 was released on June 28th that now requires Python >= 3.5
so pin to the 4.6.x stream until we are ready to drop 2.7 support.
Signed-off-by: Thanh Ha <zxiiro@gmail.com>
Change-Id: Ied1cfbed458fd27999537c510a33e142a5b7b56a
     ansible-lint~=4.0.1
     docker
     molecule
+    # pytest 5 requires Python >= 3.5
+    pytest~=4.6.4
 passenv = *
 commands =
     ./molecule.sh