Automatic merge from submit-queue (batch tested with PRs 48043, 48200, 49139, 36238, 49130)

Validate --storage-backend type.

**What this PR does / why we need it**:
Validate --storage-backend type as early as possible.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #47517
This PR is as per https://github.com/kubernetes/kubernetes/pull/47517/files#r121975646

**Special notes for your reviewer**:
/cc @justinsb 

**Release note**:

```release-note
NONE
```