KEP-127: Changes for alpha and mark implementable

This adds the needed KEP metadata, CRI changes, etc.

Signed-off-by: Rodrigo Campos <[email protected]>
Co-authored-by: Giuseppe Scrivano <[email protected]>
Signed-off-by: Giuseppe Scrivano <[email protected]>

Author: rata

keps/prod-readiness/sig-node/127.yaml

@@ -0,0 +1,6 @@
+# The KEP must have an approver from the
+# "prod-readiness-approvers" group 
+# of http://git.k8s.io/enhancements/OWNERS_ALIASES
+kep-number: 127
+alpha:
+  approver: "wojtek-t"