Changelog

• k0s cluster backup/restore tool
• From now k0s releases have default OCI bundle for airgap installation
• Etcd now uses JWT tokens
• Update components versions
  • konnectivity up to 0.0.16
  • kubernetes up to 1.21.0
  • calico up to 3.18.1
  • kube-router up to 1.2.1
• Bug fixes and general stability improvements