add rule

Signed-off-by: Stéphane Depierrepont <toorop@toorop.fr>
getRule, setFWenable, getIpProperties

Signed-off-by: Stéphane Depierrepont <toorop@toorop.fr>
Firewall get rule

Signed-off-by: Stéphane Depierrepont <toorop@toorop.fr>