There's a new major version released on PyPI, and it doesn't seem to work with Pungi yet. Until code is updated to be compatible, let's ensure tox won't try to install it. Signed-off-by: Lubomír Sedlář <lsedlar@redhat.com>
JIRA: RHELCMP-1773 Signed-off-by: Haibo Lin <hlin@redhat.com>