Support dynamic NFS provisioning in submodule
Closes #2 (closed)
The work was done in the submodule, but the changes were simple and have been deployed in the namespace storage.
See https://gitlab.palpant.us/justin/external-storage/commit/102941f99b07d1eb7e78ca42dbe60f553680c4e7 for the relevant changes, which were pushed straight to master in the submodule.