Adds node attestation proposal

This will resolve the a kubeadm token reuse issue as well as aid
in proving a chain of trust from hardware to node.

Signed-off-by: Naadir Jeewa <[email protected]>
Signed-off-by: Yassine TIJANI <[email protected]>
Co-authored-by: Naadir Jeewa <[email protected]>
Co-authored-by: Yassine TIJANI <[email protected]>

Author: yastij