Use blobfuse mounted directory for read/write from model runs.

[dwr-psandhu]

In the past the blobfuse library had issues dealing with SCHISM level of activity for IO so a blob mounted directory could not be used easily for read/write. There seem to have been improvements to the library to where it may now be possible to directly read/write to the blob storage mounted directory. This task is to implement a template to run directly on the blob mounted data.

NFS will still be used to coordinate read/writes from the main MPI node but there will be no need for modified copy loop that runs in the background currently and transfers files in the background to the blob. Additionally there will be no need to copy the files to the local main node either.