Automatic merge from submit-queue (batch tested with PRs 60699, 63780). 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>.

e2e/storage: parameterize container images

**What this PR does / why we need it**:

The CSI integration test for hostpath was hard-coded to use the latest
stable release of the sidecar and hostpath container images. This
makes sense for regression testing of changes made in Kubernetes
itself, but the same test is also useful for testing the "canary"
images on quay.io before tagging them as a new release or for testing
locally produced images. Both is now possible via command line
parameters.

**Which issue(s) this PR fixes**:
Related-to: kubernetes-csi/docs#23

**Special notes for your reviewer**:

The commit message has usage instructions.

```release-note
NONE
```

/sig storage