simplify upload/download commands

[klearned]

Right now we need to use log docker commands, it would be great if these were simpler.

Perhaps you could create a script so the user could just list their token, the relative path and filename of the manifest, the relative path for where the directory containing the samples and the relative path for the outputs. At this point, I just look up a previous upload or download and edit those three things...nothing else changes.

So, go from this:

docker run --rm -it -e ACCESS_TOKEN=<mytokenhere> -e REDWOOD_ENDPOINT=ucsc-cgp.org -v $(pwd)/myDirectory/myManifest.tsv:/dcc/manifest.tsv -v $(pwd)/myDirectory:/samples -v $(pwd)/myDirectory/outputs:/outputs quay.io/ucsc_cgl/core-client:1.1.0 spinnaker-upload --force-upload --skip-submit /dcc/manifest.tsv

to:

$ rwUpload myToken myDirectory/myManifest.tsv myDirectory myDirectory/outputs

[klearned]

@wshands @kozbo