* add aws s3 benchmark script
* add s3 benchmark tests
* rearrange so smaller diff, fix spelling
* add configurable uplink config for s3-benchmark
* make new bucket w/unique name for each s3 test
* changes per CR
* update uplink cmd args
* add uplod/download benchmark, add script to run benchmarks
* fix lint err
* changes per CR comments
* export env var for linux
* fix lint
* add byte count to bench test