Update Unicorn restart task

We are using a simple unicorn.rb file in the Installer, which requires a different way of restarting the server

This task is still a little limited and hackish but it does the job for now 😌

We are killing any existing unicorn process and starting unicorn. It checks for existing processes in both the standard consul folder and in the capistrano `current` folder, and skipping any exception if unicorn was not running.

lib/capistrano/tasks/restart.cap

@@ -1,10 +1,8 @@
-namespace :deploy do
-  desc 'Commands for unicorn application'
-  %w(start stop force-stop restart upgrade reopen-logs).each do |command|
-    task command.to_sym do
-      on roles(:app), in: :sequence, wait: 5 do
-        execute "/etc/init.d/unicorn_#{fetch(:full_app_name)} #{command}"
-      end
-    end
+desc 'Restart Unicorn'
+task :restart do
+  on roles(:app) do
+    execute "kill -QUIT `cat /home/deploy/consul/pids/unicorn.pid`; true"
+    execute "kill -QUIT `cat /home/deploy/consul/shared/pids/unicorn.pid`; true"
+    execute "cd /home/deploy/consul/current && /home/deploy/.rvm/gems/ruby-2.3.2/wrappers/unicorn -c config/unicorn.rb -E production -D"
   end
-end
+end