--userid option for migrations doesn't work on rollback

[dannylamb]

The --userid option that's needed so we can pass around JWT tokens isn't available for the other migration operations, most notably rollbacks. If the user id isn't known, then files can't be deleted from Fedora, resulting in this weird message:

[error] Failed to unlink file fedora://some/file/path

[seth-shaw-unlv]

Makes sense; although rollback is the only other one that really needs it because it modifies entities while the others (status and reset) are only doing migration state.

[seth-shaw-unlv]

Resolved with Islandora/islandora@31faef8