Add compatibility between puma and RMV1

Puma was adding commands to `rvm_map_bins`, which meant RMV1 wasn't
using the default value of `rvm1_map_bins`.

Changing the order we use to require `rmv1/capistrano3` and
`capistrano/puma` did not fix the issue.

config/deploy.rb

@@ -8,6 +8,7 @@ end
 
 set :rails_env, fetch(:stage)
 set :rvm1_ruby_version, "2.3.2"
+set :rvm1_map_bins, -> { fetch(:rvm_map_bins).to_a.concat(%w[rake gem bundle ruby]).uniq }
 
 set :application, "consul"
 set :full_app_name, deploysecret(:full_app_name)