Kubelet certs (#54)
Differences in kubelet config:
```
+ "x509": {
+ "clientCAFile": "/etc/kubernetes/ssl/ca.pem"
+ },
```
and
```
+ "featureGates": {
+ "AdvancedAuditing": false,
+ "ExpandPersistentVolumes": true,
+ "PodShareProcessNamespace": true
+ },
```
And the only warning we get from kubelet logs is:
```
Oct 03 14:57:41 ip-10-66-23-108 docker[1252]: Flag --allow-privileged has been deprecated, will be removed in a future version
```
which we can't do anything about currently: https://trello.com/c/LtXvyQuZ/486-remove-allow-privileged-from-kubelet
