Automatic merge from submit-queue

Add OWNERS file for GCE cloud provider

GCE cloud provider does not have OWNERS file and all PRs need to be approved by owner of pkg/cloudprovider, which is currently only @mikedanese. Adding more options would be helpful to speed up reviews.

Feel free to add/remove some names, this first version is just my qualified guess. It's hard to distinguish generic Kubernetes refactoring from real cloud provider work in git log.

```release-note
NONE
```