Merge pull request kubernetes#4215 from yt2985/kep

Add kube-apiserver to the components field for LegacyServiceAccountTokenCleanUp in kep.yaml.

Author: k8s-ci-robot

keps/sig-auth/2799-reduction-of-secret-based-service-account-token/README.md

@@ -273,7 +273,7 @@ legacy tokens for security practices.
 #### Alpha -> Beta Graduation
 
 - [ ] Approved by PRR and scalability
-- [ ] Any known bugs fixed
+- [x] Any known bugs fixed
 - [ ] Tests passing
 
 ### Upgrade / Downgrade Strategy

keps/sig-auth/2799-reduction-of-secret-based-service-account-token/kep.yaml

@@ -27,6 +27,7 @@ feature-gates:
   - name: LegacyServiceAccountTokenCleanUp
     components:
       - kube-controller-manager
+      - kube-apiserver
 disable-supported: true
 metrics:
   - serviceaccount_legacy_tokens_total