Enable indentation width cop
Enable indentation width cop

This cop is necessary so the `Layout/IndentationConsistency` cop works
properly when its `EnforcedStyle` is set to `Rails`, and so incorrect
indentation for `private` methods is properly detected.

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