Disambiguates find query after patch - #199

Tell us about the problem your pull request is solving.

When modifying the params.knex query with a join that introduces an ambiguous primary key, PATCH requests will fail with an ambiguous column error:

BadRequest: 
  select `animals`.* 
  from `animals` 
    left join `animals` as `ancestors` on `ancestors`.`id` = `animals`.`ancestor_id` 
  where `id` in (2) - SQLITE_ERROR: ambiguous column name: id

To fix, the table is specified in the Patch request (see code in MR)

Are there any open issues that are related to this?

Not really. There's this: #164
But it's stale and only related in that it concerns the same service method.

Is this PR dependent on PRs in other repos?

No