- Prevents kubelet from overwriting capacity during sync.
- Handles opaque integer resources in the scheduler.
  - Adds scheduler predicate tests for opaque resources.
- Validates opaque int resources:
  - Ensures supplied opaque int quantities in node capacity,
    node allocatable, pod request and pod limit are integers.
  - Adds tests for new validation logic (node update and pod spec).
- Added e2e tests for opaque integer resources.