Automatic merge from submit-queue (batch tested with PRs 57122, 57142, 57016, 56927, 56678). 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>. Modified local-volume provisioner e2e test to use mounted volumes **What this PR does / why we need it**: We are changing the local volume provisioner to discover only mount points, https://github.com/kubernetes-incubator/external-storage/pull/499. This PR shifts the volumes from directories to mount points for the provisioner e2e tests. **Which issue(s) this PR fixes**: Fixes https://github.com/kubernetes/kubernetes/issues/57004 **Special notes for your reviewer**: **Release note**: ``` NONE ```