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Hi Prefect community :wave:, I've got a problem with passing environment variables from Kubernetes agent to DaskKubernetesEnvironment. Anyone able to help? More in thread

My setup is a Kubernetes agent started with the `--env FOO=BAR` option. I'm able to spawn "regular" flows as jobs just fine and it will also pass the env variables (<https://github.com/PrefectHQ/prefect/blob/39ed8e1af0afb62263ab6c3c8d8da9c7de135c75/src/prefect/agent/kubernetes/agent.py#L644|as seen here>). Now I would like to test out the <https://docs.prefect.io/orchestration/execution/dask_k8s_environment.html#overview|DaskKubernetesEnvironment> and access the `FOO` env variable
```with Flow(
    "whatever",
    environment=DaskKubernetesEnvironment(min_workers=1, max_workers=3),
) as flow:
    secret = EnvVarSecret('FOO', cast=str, raise_if_missing=True)```
and run it using the Kubernetes agent.

Now the process is bit different, the flow run is picked by the k8s agent, it spawns a job (all the same as previously) and the job executes the DaskKubernetesEnvironment that creates another dask job. The problem I have is the `FOO` variable is lost in the last step. `Kubernetes agent  --[env variables]--&gt; Kubernetes job --[no env vars]--&gt; dask job`. Checking the <https://github.com/PrefectHQ/prefect/blob/39ed8e1af0afb62263ab6c3c8d8da9c7de135c75/src/prefect/environments/execution/dask/k8s.py#L373|code> there is indeed nothing passing env vars.

How should I populate the env vars for dask jobs?

I'm not sure how it's done with the Environment, but using the new DaskExecutor feature it's possible to customize the pod like
```                            executor=DaskExecutor(
                cluster_class=KubeCluster,
                cluster_kwargs={
                    'pod_template': make_pod_spec(env={'HELLO': 'world'})
                }```