Merge pull request #61453 from hzxuzhonghu/kube-api-cleanup

Automatic merge from submit-queue (batch tested with PRs 61453, 61393, 61379, 61373, 61494). 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>.

remove kube-apiserver `--storage-version` flag

#`--storage-version` has been deprecated more than a year ago, should remove it.

**Release note**:

```release-note
Remove kube-apiserver `--storage-version` flag, use `--storage-versions` instead.
```
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Kubernetes Submit Queue 2018-03-22 06:20:15 -07:00 committed by GitHub
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@ -95,13 +95,6 @@ func mergeGroupVersionIntoMap(gvList string, dest map[string]schema.GroupVersion
func (s *StorageSerializationOptions) AddFlags(fs *pflag.FlagSet) {
// Note: the weird ""+ in below lines seems to be the only way to get gofmt to
// arrange these text blocks sensibly. Grrr.
deprecatedStorageVersion := ""
fs.StringVar(&deprecatedStorageVersion, "storage-version", deprecatedStorageVersion,
"DEPRECATED: the version to store the legacy v1 resources with. Defaults to server preferred.")
fs.MarkDeprecated("storage-version", "--storage-version is deprecated and will be removed when the v1 API "+
"is retired. Setting this has no effect. See --storage-versions instead.")
fs.StringVar(&s.StorageVersions, "storage-versions", s.StorageVersions, ""+
"The per-group version to store resources in. "+
"Specified in the format \"group1/version1,group2/version2,...\". "+