__init__.py: Fix virt-test issue #275

Fix

https://github.com/autotest/virt-test/issues/275

By adding a reference to the common libraries from
the top level __init__.py module constructor.

Signed-off-by: Lucas Meneghel Rodrigues <lmr@redhat.com>
autotest-framework.spec: updated to version 0.16.0

Signed-off-by: Cleber Rosa <crosa@redhat.com>