Fixing broken seeds
Fixing broken seeds

This is Jeremy; I copied the code from another location, but didn't
really pay attention to what I copied.  Prior to this commit, the code
referenced an undeclared `id` variable.  This fixes that and renames
`id` into something more meaningful.

samvera/hyrax,samvera/hyrax,samvera/hyrax,samvera/hyrax