### Description

I am not sure why this PR was not merged (https://github.com/apache/airflow/pull/23558) but I think it would be great to add hostAliases not just to the workers, but the scheduler and webserver too.

### Use case/motivation

Be able to modify /etc/hosts in webserver and scheduler.

### Related issues

_No response_

### Are you willing to submit a PR?

- [ ] Yes I am willing to submit a PR!

### Code of Conduct

- [X] I agree to follow this project's [Code of Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)

]
                    }
                },
                "tolerations": [
                    {"key": "not-me", "operator": "Equal", "value": "true", "effect": "NoSchedule"}
                ],
                "topologySpreadConstraints": [
                    {
                        "maxSkew": 1,
                        "topologyKey": "not-me",
                        "whenUnsatisfiable": "ScheduleAnyway",
                        "labelSelector": {"matchLabels": {"tier": "airflow"}},
                    }
                ],
                "nodeSelector": {"type": "not-me"},
            },
            show_only=["templates/scheduler/scheduler-deployment.yaml"],
        )
        assert expected_affinity == jmespath.search("spec.template.spec.affinity", docs[0])
        assert "ssd" == jmespath.search(
            "spec.template.spec.nodeSelector.type",
            docs[0],
        )
        tolerations = jmespath.search("spec.template.spec.tolerations", docs[0])
        assert 1 == len(tolerations)
        assert "dynamic-pods" == tolerations[0]["key"]
        assert expected_topology_spread_constraints == jmespath.search(
            "spec.template.spec.topologySpreadConstraints[0]", docs[0]
        )
    def test_should_create_default_affinity(self):