move newrelic + deploytags gem to production env, rename cap tasks to .rake

Capfile

@@ -13,6 +13,6 @@ require 'capistrano/deploytags'
 require 'new_relic/recipes'
 
 # Load custom tasks from `lib/capistrano/tasks` if you have any defined
-Dir.glob('lib/capistrano/tasks/*.cap').each { |r| import r }
+Dir.glob('lib/capistrano/tasks/*.rake').each { |r| import r }
 
 after "deploy:updated", "newrelic:notice_deployment"

Gemfile

@@ -68,12 +68,12 @@ end
 
 group :production do
   gem 'unicorn-worker-killer'
+  gem 'newrelic_rpm'
   gem 'gctools', :platforms => :ruby
+  gem 'capistrano-deploytags', '~> 1.0.0', require: false
 end
 
 group :development do
   gem 'ruby-prof'
-  gem 'newrelic_rpm', require: false
-  gem 'capistrano-deploytags', '~> 1.0.0', require: false
   # gem 'sql-logging'
 end

lib/capistrano/tasks/unicorn.rake

@@ -3,6 +3,7 @@ namespace :unicorn do
   task :terminate do
     on roles(:app) do
       execute "[[ -n $(pgrep -f unicorn) ]] && pgrep -f unicorn | xargs kill -SIGTERM"
+      sleep(5)
     end
   end
 
@@ -14,7 +15,6 @@ namespace :unicorn do
   end
 end
 
-after "deploy:published", "unicorn:stop"
 after "deploy:published", "unicorn:terminate"
 after "deploy:published", "unicorn:kill"
 after "deploy:published", "unicorn:start"