Use 'k8s.gcr.io' instead of 'gcr.io/google-containers' (#5709)

Ref: kubernetes/kubeadm/issues/2051

See: https://groups.google.com/forum/?utm_medium=email&utm_source=footer#!msg/kubernetes-sig-release/ew-k9PEBckQ/T7dFepHdCAAJ

Signed-off-by: Nguyen Hai Truong <truongnh@vn.fujitsu.com>

roles/kubernetes-apps/container_engine_accelerator/nvidia_gpu/defaults/main.yml

@@ -7,7 +7,7 @@ nvidia_gpu_flavor: tesla
 nvidia_url_end: "{{ nvidia_driver_version }}/NVIDIA-Linux-x86_64-{{ nvidia_driver_version }}.run"
 nvidia_driver_install_container: false
 nvidia_driver_install_centos_container: atzedevries/nvidia-centos-driver-installer:2
-nvidia_driver_install_ubuntu_container: gcr.io/google-containers/ubuntu-nvidia-driver-installer@sha256:7df76a0f0a17294e86f691c81de6bbb7c04a1b4b3d4ea4e7e2cccdc42e1f6d63
+nvidia_driver_install_ubuntu_container: k8s.gcr.io/ubuntu-nvidia-driver-installer@sha256:7df76a0f0a17294e86f691c81de6bbb7c04a1b4b3d4ea4e7e2cccdc42e1f6d63
 nvidia_driver_install_supported: false
 nvidia_gpu_device_plugin_container: "k8s.gcr.io/nvidia-gpu-device-plugin@sha256:0842734032018be107fa2490c98156992911e3e1f2a21e059ff0105b07dd8e9e"
 nvidia_gpu_nodes: []