## Changes
Adds the dbfs:/ prefix to paths output by the cp command so they can be
used with the CLI
## Tests
Manually
Currently there are no integration tests for command output, I'll add
them in separately
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Co-authored-by: Pieter Noordhuis <pieter.noordhuis@databricks.com>
## Tests
New integration test for the read/write parts of the other filers. The
integration test cannot be shared just yet because the Files API doesn't
include support for creating/listing/removing directories yet.