Merge pull request #8038 from joshjms/publish-image-3.6.0-rc.4-0

Publish etcd 3.6.0-rc.4-0 image

Author: k8s-ci-robot

registry.k8s.io/images/k8s-staging-etcd/images.yaml

@@ -29,6 +29,7 @@
     "sha256:e013d0d5e4e25d00c61a7ff839927a1f36479678f11e49502b53a5e0b14f10c3": ["3.5.9-0"]
     "sha256:87cd0c2afe02de8dca78b8027852a6e8a18752ad5036be71ff21dea8c175abb9": ["3.6.0-alpha.0-0"]
     "sha256:5b19cb5c3eeb06dbbea9d167faef0694d59f513b3d4797801787f95f2742a605": ["3.6.0-rc.1-0"]
+    "sha256:0f59a43c4278255aae07b3e97506d3880aff23c6da7e37e117b4b12651e048ad": ["3.6.0-rc.4-0"]
 - name: etcd-empty-dir-cleanup
   dmap:
     "sha256:f805272b4422efa92e20789295c343ed26ff36ddc4f70eeb5d7890d6b758b0fc": ["3.4.7.0"]