Disable iptables nmap test
This test relies in a Debian LXC image to be deployed in the DUT which presents a problem in some scenarios, devices requires access to public Internet and QEMU requires LXC support.
Disable this test until a it is reimplemented to overcome the current limitations.
infrastructure/apertis-issues#328 (closed)
Signed-off-by: Walter Lozano walter.lozano@collabora.com