Merge pull request kubernetes#2910 from KnVerey/composition_implementable

KEP-2299: Update KEP for move to implementable

Author: k8s-ci-robot

keps/prod-readiness/sig-cli/2299.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: 2299
+alpha:
+  approver: "@ehashman"