make natpmp test pass on travis (hopefully)
make natpmp test pass on travis (hopefully)

lqch14102/lantern,lqch14102/lantern,getlantern/lantern-java,lqch14102/lantern,lqch14102/lantern,getlantern/lantern-java,lqch14102/lantern,lqch14102/lantern,lqch14102/lantern,getlantern/lantern-java,lqch14102/lantern,lqch14102/lantern,getlantern/lantern-java,getlantern/lantern-java,getlantern/lantern-java,getlantern/lantern-java,getlantern/lantern-java,getlantern/lantern-java