[Ruby] Rename files/folders (#534)

* Rename templateDir: rails5 -> ruby-on-rails-server

* Rename script: rails5-petstore-server.sh -> ruby-on-rails-server-petstore.sh

* Rename sample folder: rails5 -> ruby-on-rails

* Rename script(openapi3): rails5-petstore-server.sh -> ruby-on-rails-server-petstore.sh

* Update ruby-on-rails-server-petstore.sh

* Rename templateDir: sinatra -> ruby-sinatra-server

* Rename script: sinatra-petstore-server.sh -> ruby-sinatra-server-petstore.sh

* Rename sample folder: sinatra -> ruby-sinatra

* Update script

* Rename templateDir: ruby -> ruby-client

* Rename script: ruby-petstore.sh -> ruby-client-petstore.sh

* Update scripts

* Update samples

- bin/ruby-sinatra-server-petstore.sh
- bin/ruby-on-rails-server-petstore.sh
- bin/ruby-client-petstore.sh
- bin/security/ruby-client-petstore.sh

samples/server/petstore/ruby-on-rails/bin/update

@@ -0,0 +1,29 @@
+#!/usr/bin/env ruby
+require 'pathname'
+require 'fileutils'
+include FileUtils
+
+# path to your application root.
+APP_ROOT = Pathname.new File.expand_path('../../', __FILE__)
+
+def system!(*args)
+  system(*args) || abort("\n== Command #{args} failed ==")
+end
+
+chdir APP_ROOT do
+  # This script is a way to update your development environment automatically.
+  # Add necessary update steps to this file.
+
+  puts '== Installing dependencies =='
+  system! 'gem install bundler --conservative'
+  system('bundle check') || system!('bundle install')
+
+  puts "\n== Updating database =="
+  system! 'bin/rails db:migrate'
+
+  puts "\n== Removing old logs and tempfiles =="
+  system! 'bin/rails log:clear tmp:clear'
+
+  puts "\n== Restarting application server =="
+  system! 'bin/rails restart'
+end