Enable initial set of Fedora CI tests
    
    The goal of the Fedora CI is to run "basic functionality" and
    "integration" tests.  Avocado's gdbtest.py does both, as it exercises
    the Avocado test and utils APIs, and also communicates with GDB, thus
    ensuring some integration validation with those packages.
    
    Reference: https://fedoraproject.org/wiki/CI
    Signed-off-by: Cleber Rosa <crosa@redhat.com>