As an infra developer, I want to know how to write outputs on ADC infra.

[trey-stafford]

• A repo w/ example code that writes out some data. E.g., a beam recipe that writes out "hello-world.txt" to storage
• Documentation on how/where to write data to.
  • Link to example code produced above
  • Resource limits. E.g., what is the max? Should we perform cleanup regularly?
  • How do we access data written to ADC infra?

Background: https://github.com/DataONEorg/k8s-cluster/blob/main/storage/Ceph/Ceph-CSI.md