Change policy for image pulls to IfNotPresent

examples/cluster-init-job.yaml

examples/public-eos-events-select.yaml

examples/scalability-test-eos.yaml

examples/secure-eos-events-select.yaml

examples/spark-pi-custom-s3.yaml

examples/spark-pi-deps.yaml

examples/spark-pi-schedule.yaml

examples/spark-pi.yaml

examples/tpcds-datagen.yaml

examples/tpcds.yaml