Merge pull request #53254 from jsravn/increase-log-level-aws-public-dns-message

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>.

Increase log level of failed AWS public dns lookup

This constantly spams us because none of our nodes have a public IP. We
run kubelet at -v=2 as recommended.

The message is "Could not determine public DNS from AWS metadata." Debatable if this should even be logged at all, but I don't mind at a higher log level.



**What this PR does / why we need it**:
Self explanatory.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*:

**Special notes for your reviewer**:

**Release note**:

```release-note
```
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Kubernetes Submit Queue 2017-11-26 08:18:25 -08:00 committed by GitHub
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