Swap @valuator instance variable for a let
Swap @valuator instance variable for a let

Why:

Avoid instance variables as we agreed upon with RSpec/InstanceVariable

How:

Using a let(:valuator) and replacing all `@valuator` with `valuator`

AyuntamientoMadrid/consul,AyuntamientoMadrid/consul,AyuntamientoMadrid/consul,AyuntamientoMadrid/consul