modules/nilrt_ip.py: Fix disable function
modules/nilrt_ip.py: Fix disable function

When an interface is disabled, the adaptor mode should be Disabled.

Signed-off-by: Alexandru Vasiu <12db13f1807ddd2f5e9e972458aecda3170fb20d@ni.com>

saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt