Use `let` only in the examples using the variables
Use `let` only in the examples using the variables

These variables were only used in the `validations` block; the rest of
the tests re-defined them, making the code hard to follow.

consul/consul,usabi/consul_san_borondon,consul/consul,usabi/consul_san_borondon,consul/consul,consul/consul,usabi/consul_san_borondon,consul/consul,usabi/consul_san_borondon