Add ability to update file names

[Sora201710]

The idea is to implement a new task, called update-files, to be able to update file names from workbench. Is this something people would be interested in?

[mjordan]

Tell me more! What's your use case?

[Sora201710]

The use case is to be able to update filenames of files that have already been ingested to conform to particular file naming conventions.

[mjordan]

This sounds like it could be useful. Would it be able to change filenames on local (public/private) Drupal filesystems as well as Fedora URLs?

[Sora201710]

Currently, I'm not sure it can do that (all the function does is send a patch request to the site) but it could maybe be extended to include that functionality.

[mjordan]

Even if this only works on local filesystems it will be useful. If you can include an integration test in your PR I would appreciate it (e.g. create a media / file, hit its URL and expect a 200, rename it, then hit its new location and expect a 200).