spec: add systemd-python to BuildRequires

Required for tests to pass as pyhook uses
journal logging.

Related to rhbz#1001139

Signed-off-by: Richard Marko <rmarko@redhat.com>
pyhook: add logging workaround for rhbz#1023041

Required for unit tests to pass.

Related to rhbz#1001139

Signed-off-by: Richard Marko <rmarko@redhat.com>