Update capistrano ruby version to 2.4.1
Update capistrano ruby version to 2.4.1

Uncommenting the lines to install the correct ruby version, gemsets and
bundler

These lines were commented out to speed up deploys, but are now needed
again

Also we are using a slightly old version of rvm-capistrano, we should
update soon, but this one seems to work just fine :relieved:

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