add unit tests for static:x.x.x.x interface spec
add unit tests for static:x.x.x.x interface spec

Change-Id: Icb2e05b43a6f4b77861bb990f183171a621e478e

benoittoulme/containerpilot,joyent/containerpilot,justenwalker/containerbuddy,tgross/containerbuddy,benoittoulme/containerpilot,justenwalker/containerbuddy,tgross/containerbuddy,flyinprogrammer/containerpilot,joyent/containerbuddy,flyinprogrammer/containerpilot,joyent/containerpilot,justenwalker/containerpilot,joyent/containerbuddy,joyent/containerpilot,benoittoulme/containerpilot,justenwalker/containerpilot