* wip.
* Test: Make a change in tune to trigger tune tests, which are not run otherwise, but seem to fail nevertheless with this PR's changes.
* remove bare_metal_policy_with_custom_view_reqs from tests
* In case a worker runs multiple envs, make sure a different seed can be deterministically set on all of them.
* Revert a couple of whitespace changes.
* Fix a few style errors.
Co-authored-by: Jun Gong <jungong@mbpro.local>
