The Faker sometimes fails in development

```
Failure → ./spec/unit/dao/cassandra_spec.lua @ 308
Cassandra DAO #dao #cassandra :update() plugins should return nil if no entity was found to update in DB
./spec/unit/dao/cassandra_spec.lua:322: Expected to be falsy, but value was:
(table): {
  [message] = 'Plugin already exists'
  [unique] = true }
make[1]: *** [run-integration-tests] Error 1
make: *** [test-all] Error 2
```
