KEP-3766: Move ReferenceGrant to sig-auth API Group

Co-Authored-By: Nick Young <[email protected]>

Author: robscott

keps/prod-readiness/sig-auth/3766.yaml

@@ -0,0 +1,8 @@
+# The KEP must have an approver from the
+# "prod-readiness-approvers" group 
+# of http://git.k8s.io/enhancements/OWNERS_ALIASES
+kep-number: 3766
+alpha:
+  approver: "@johnbelamaric"
+beta:
+  approver: "@johnbelamaric"