Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

etcd: update version to 3.1.10

ref: https://github.com/kubernetes/kubernetes/issues/49386

Need image pushed:
```
gcr.io/google_containers/etcd:3.1.10
```