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>.

Cluster Autoscaler 1.2.2

Update Cluster Autoscaler version to 1.2.2

```release-note
Cluster Autoscaler 1.2.2 (release notes: https://github.com/kubernetes/autoscaler/releases/tag/cluster-autoscaler-1.2.2)
```