[jjo] upgrade kube-router to v0.2.1 (#3535)
[jjo] upgrade kube-router to v0.2.1 (#3535)

kube-router v0.2.1 highlights from changelog:
- IPv6 WIP but pretty close to full working functionality
- fully support network policy semantics with addition of support for
  ipblock and except
kubernetes-sigs/kubespray,Atoms/kubespray,Atoms/kubespray,kubernetes-incubator/kargo,insequent/kargo,Atoms/kubespray,kubespray/kargo,insequent/kargo,kubernetes-sigs/kubespray,kubernetes-incubator/kargo,kubernetes-incubator/kubespray,kubernetes-incubator/kubespray,kubernetes-sigs/kubespray,kubespray/kargo,kubernetes-sigs/kubespray,Atoms/kubespray