Automatic merge from submit-queue (batch tested with PRs 41667, 41820, 40910, 41645, 41361)
Changing --use-kubernetes-version to --kubernetes-version for kubeadm beta
**What this PR does / why we need it**: to follow-up agreement on SIG-Cluster-Lifecycle on 2017-02-21, flag for `kubeadm init` should be renamed.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #
**Special notes for your reviewer**: Meeting minutes for SIG-Cluster-Lifecycle 2017-02-21
**Release note**:
```release-note
Flag --use-kubernetes-version for kubeadm init renamed to --kubernetes-version
```
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