s/V1beta1PodDisruptionBudget/V1PodDisruptionBudget/ for COMPINFRA-4409

[EvanKrall]

This seems to work fine -- I've confirmed via the paasta playground that it's going through the V1PodDisruptionBudget code paths at least, and seems to function in the 1.24-based playground.

I tried upgrading the playground to 1.25 but then my pods are Pending forever -- I suspect it's just something with the playground. Without the changes in this PR, testing setup_kubernetes_job against the 1.25 playground results in

ERROR:__main__:Error while processing: compute-infra-test-service-autoscaling-cb9e0385bfc73cb2288a5b12894720ab3d2a744f-config2468529d
Traceback (most recent call last):
  File "/nail/home/krall/pg/paasta/paasta_tools/setup_kubernetes_job.py", line 324, in setup_kube_deployments
    app.update_related_api_objects(kube_client)
  File "/nail/home/krall/pg/paasta/paasta_tools/kubernetes/application/controller_wrappers.py", line 278, in update_related_api_objects
    super().update_related_api_objects(kube_client)
  File "/nail/home/krall/pg/paasta/paasta_tools/kubernetes/application/controller_wrappers.py", line 122, in update_related_api_objects
    self.ensure_pod_disruption_budget(kube_client, self.soa_config.get_namespace())
  File "/nail/home/krall/pg/paasta/paasta_tools/kubernetes/application/controller_wrappers.py", line 212, in ensure_pod_disruption_budget
    return create_pod_disruption_budget(
  File "/nail/home/krall/pg/paasta/paasta_tools/kubernetes_tools.py", line 3216, in create_pod_disruption_budget
    return kube_client.policy.create_namespaced_pod_disruption_budget(
  File "/nail/home/krall/pg/paasta/.tox/py38-linux/lib/python3.8/site-packages/kubernetes/client/api/policy_v1beta1_api.py", line 67, in create_namespaced_pod_disruption_budget
    return self.create_namespaced_pod_disruption_budget_with_http_info(namespace, body, **kwargs)  # noqa: E501
  File "/nail/home/krall/pg/paasta/.tox/py38-linux/lib/python3.8/site-packages/kubernetes/client/api/policy_v1beta1_api.py", line 166, in create_namespaced_pod_disruption_budget_with_http_info
    return self.api_client.call_api(
  File "/nail/home/krall/pg/paasta/.tox/py38-linux/lib/python3.8/site-packages/kubernetes/client/api_client.py", line 348, in call_api
    return self.__call_api(resource_path, method,
  File "/nail/home/krall/pg/paasta/.tox/py38-linux/lib/python3.8/site-packages/kubernetes/client/api_client.py", line 180, in __call_api
    response_data = self.request(
  File "/nail/home/krall/pg/paasta/.tox/py38-linux/lib/python3.8/site-packages/kubernetes/client/api_client.py", line 391, in request
    return self.rest_client.POST(url,
  File "/nail/home/krall/pg/paasta/.tox/py38-linux/lib/python3.8/site-packages/kubernetes/client/rest.py", line 275, in POST
    return self.request("POST", url,
  File "/nail/home/krall/pg/paasta/.tox/py38-linux/lib/python3.8/site-packages/kubernetes/client/rest.py", line 234, in request
    raise ApiException(http_resp=r)
kubernetes.client.exceptions.ApiException: (404)

so this at least makes progress.