Outdated spark image in spark example

[t4lz]

Tried to follow the instructions of the spark example on macOS with an M2 chip and a docker-desktop k8s cluster.

Got ImagePullBackOff for the spark-master-controller.

Events:
  Type     Reason     Age                From               Message
  ----     ------     ----               ----               -------
  Normal   Scheduled  50s                default-scheduler  Successfully assigned spark-cluster/spark-master-controller-98fpm to docker-desktop
  Normal   BackOff    21s (x2 over 48s)  kubelet            Back-off pulling image "registry.k8s.io/spark:1.5.2_v1"
  Warning  Failed     21s (x2 over 48s)  kubelet            Error: ImagePullBackOff
  Normal   Pulling    7s (x3 over 50s)   kubelet            Pulling image "registry.k8s.io/spark:1.5.2_v1"
  Warning  Failed     7s (x3 over 49s)   kubelet            Failed to pull image "registry.k8s.io/spark:1.5.2_v1": [DEPRECATION NOTICE] Docker Image Format v1 and Docker Image manifest version 2, schema 1 support is disabled by default and will be removed in an upcoming release. Suggest the author of registry.k8s.io/spark:1.5.2_v1 to upgrade the image to the OCI Format or Docker Image manifest v2, schema 2. More information at https://docs.docker.com/go/deprecated-image-specs/
  Warning  Failed     7s (x3 over 49s)   kubelet            Error: ErrImagePull