Correctly pass arguments down to management command helpers

Arguments are incorrectly passed down to the import_sshkeys and import_jobtypes management command helper functions. For import_sshkeys it's just a matter of changing "label" to "name" in the argument list (or to rename "name" to "label" in the assignment) and for import_jobtypes it's a simple matter of swapping "jobtype" and "f" in the argument list.