update Daemonset API for GPU driver installing

[jinchihe]

Fixes: #537

Since the API version is apps/v1, We should use kubernetes.client.AppsV1Api, instead of kubernetes.client.ExtensionsV1beta1Api

https://raw.githubusercontent.com/GoogleCloudPlatform/container-engine-accelerators/stable/nvidia-driver-installer/cos/daemonset-preloaded.yaml

apiVersion: apps/v1
kind: DaemonSet
metadata:

---

This change is 

[jinchihe]

/hold
I'm going to double confirm my changes in tfjobs ci tests.

[jinchihe]

Seems the stable version defination file still has problem:

 File "/usr/local/lib/python2.7/dist-packages/kubernetes/client/api_client.py", line 364, in request
   body=body)
 File "/usr/local/lib/python2.7/dist-packages/kubernetes/client/rest.py", line 266, in POST
   body=body)
 File "/usr/local/lib/python2.7/dist-packages/kubernetes/client/rest.py", line 222, in request
   raise ApiException(http_resp=r)
kubernetes.client.rest.ApiException: (422)
Reason: Unprocessable Entity
HTTP response headers: HTTPHeaderDict({'Date': 'Fri, 06 Dec 2019 16:35:06 GMT', 'Audit-Id': '12e54e76-7d7f-4d54-9e44-c518e6c9e4fc', 'Cont
ent-Length': '684', 'Content-Type': 'application/json'})
HTTP response body: {"kind":"Status","apiVersion":"v1","metadata":{},"status":"Failure","message":"DaemonSet.apps \"nvidia-driver-install
er\" is invalid: spec.template.metadata.labels: Invalid value: map[string]string{\"k8s-app\":\"nvidia-driver-installer\", \"name\":\"nvid
ia-driver-installer\"}: `selector` does not match template `labels`","reason":"Invalid","details":{"name":"nvidia-driver-installer","grou
p":"apps","kind":"DaemonSet","causes":[{"reason":"FieldValueInvalid","message":"Invalid value: map[string]string{\"k8s-app\":\"nvidia-dri
ver-installer\", \"name\":\"nvidia-driver-installer\"}: `selector` does not match template `labels`","field":"spec.template.metadata.labe
ls"}]},"code":422}

[jinchihe]

The above problem has been fixed and verified in the tfjob ci tests, that works fine now.
/hold cancel

/cc @jlewi @zhenghuiwang
Could you please let a take with high priority? that blocks the tfjobs tests. Thanks a lot!

[zhenghuiwang]

/lgtm

[zhenghuiwang]

/approve

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