Support HTTP Upload to MDF

[BenGalewsky]

As an MDF Contributor I want to be able to upload a file from a public HTTP endpoint so I don't have to have access to a Globus Endpoint

Description

MDF Connect Server 2.0 can only transfer files with the Globus Transfer Action Provider which does not support public HTTP files. We will need to upload the user's file to a scratch directory on the NCSA endpoint and transfer it from there.

Consider adding a POST from the client to this scratch directory. This assumes that the directory is writable by members of the MDF Publishers globus group. There will need to be a periodic job to clear out old files from this scratch directory.