*  Fix: Release the connection if `Authenticator` throws an exception.
 *  Fix: Change the declaration of `OkHttpClient.cache()` to return a `@Nullable Cache`. The return
    value has always been nullable but it wasn't declared properly.
 *  Fix: Reverse suppression of connect exceptions. When both a call and its retry fail, we now
    throw the initial exception which is most likely to be actionable.

	case dns.ErrInvalidBucketName:
		apiErr = ErrInvalidBucketName
	case dns.ErrBucketConflict:
		apiErr = ErrBucketAlreadyExists
	default:
		if strings.Contains(err.Error(), "request declared a Content-Length") {
			apiErr = ErrIncompleteBody
		} else {
			apiErr = ErrInternalError
		}
	}

	return apiErr
}

var noError = APIError{}

* Fix controller-manager race condition issue which cause endpoints flush during restart ([#23035](https://github.com/kubernetes/kubernetes/pull/23035), [@xinxiaogang](https://github.com/xinxiaogang))
* MESOS: forward globally declared cadvisor housekeeping flags ([#22974](https://github.com/kubernetes/kubernetes/pull/22974), [@jdef](https://github.com/jdef))