Fix broken tests

[dmarcelino]

When sails-memory is ran against waterline core github version it breaks a couple of tests:

• "Semantic Interface .find() should escape attribute names to prevent SQL injection attacks";
• "Semantic Interface .findOrCreateEach() should only have a single record for keys that exist": fixed by Fix .findOrCreateEach() test failures waterline#905

More details here:
https://travis-ci.org/dmarcelino/waterline-adapter-tests/jobs/55738380#L326
and here:
balderdashy/waterline-adapter-tests#36 (comment)