Automatic merge from submit-queue

HugePages feature

**What this PR does / why we need it**:
Implements HugePages support per https://github.com/kubernetes/community/pull/837

Feature track issue: https://github.com/kubernetes/features/issues/275

**Special notes for your reviewer**:
A follow-on PR is opened to add the EmptyDir support.

**Release note**:
```release-note
Alpha support for pre-allocated hugepages
```