kvm: fix flannel network info
kvm: fix flannel network info

Closes #2604

mike1729/rkt,kinvolk/rkt,monstermunchkin/rkt,squeed/rkt,s-urbaniak/rkt,yifan-gu/rocket,monstermunchkin/rkt,dgonyeo/rkt,matthaias/rkt,lucasallan/rkt,sgotti/rkt,rkt/rkt,sgotti/rkt,rkt/rkt,jonboulle/rkt,kinvolk/rkt,coreos/rkt,jakon89/rkt,akshaykarle/rkt,achanda/rkt,mike1729/rkt,jjlakis/rkt,joshix/rkt,s-urbaniak/rkt,sstabellini/rkt,sstabellini/rkt,akshaykarle/rkt,alban/rkt,coreos/rkt,shobhit85/rkt,dgonyeo/rkt,coreos/rkt,lucasallan/rkt,jonboulle/rkt,shobhit85/rkt,Wilybald/rkt,s-urbaniak/rkt,joshix/rkt,ybubnov/rkt,intelsdi-x/rkt,tmrts/rkt,ybubnov/rkt,lucasallan/rkt,monstermunchkin/rkt,euank/rkt,jakon89/rkt,tmrts/rkt,sgotti/rkt,cab105/rkt,yifan-gu/rkt,nhlfr/rkt,Shashwatsh/rkt,cab105/rkt,shobhit85/rkt,akshaykarle/rkt,kinvolk/rkt,yifan-gu/rkt,jonboulle/rkt,yifan-gu/rocket,Shashwatsh/rkt,kinvolk/rkt,achanda/rkt,jakon89/rkt,sstabellini/rkt,yifan-gu/rocket,rkt/rkt,matthaias/rkt,jjlakis/rkt,Wilybald/rkt,Shashwatsh/rkt,nhlfr/rkt,euank/rkt,joshix/rkt,alban/rkt,ybubnov/rkt,alban/rkt,achanda/rkt,yifan-gu/rkt,lucasallan/rkt,cab105/rkt,joshix/rkt,jjlakis/rkt,dgonyeo/rkt,rkt/rkt,squeed/rkt,matthaias/rkt,intelsdi-x/rkt,squeed/rkt,tmrts/rkt,Wilybald/rkt,Wilybald/rkt,mike1729/rkt,euank/rkt,intelsdi-x/rkt,nhlfr/rkt