[DOCFIX] Update k8s doc with new Helm additions
[DOCFIX] Update k8s doc with new Helm additions

### What changes were proposed in this pull request?
This PR proposes some additions to the [Alluxio k8s
guide](https://docs.alluxio.io/os/user/stable/en/deploy/Running-Alluxio-On-Kubernetes.html)
to reflect some of the recent additions to the Alluxio Helm chart:

- `serviceAccount`: #13297
- `tolerations`: #13214
- `hostAliases`: #13226
- `strategy`: #13423

### Why are the changes needed?
Doc validation

### Does this PR introduce _any_ user-facing change?
Yes, the documentation.

pr-link: Alluxio/alluxio#13579
change-id: cid-cd456e708547bb121cdab5df1de7599860e6e089
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