Set proxy in ruby faraday client if configured (#14597)

* set proxy in ruby faraday client if configured

* Add missing string terminator in ruby client spec

* generating samples for ruby

samples/openapi3/client/features/generate-alias-as-model/ruby-client/spec/api_client_spec.rb

@@ -89,6 +89,8 @@ describe Petstore::ApiClient do
     end
   end
 
+
+
   describe '#deserialize' do
     it "handles Array<Integer>" do
       api_client = Petstore::ApiClient.new