Include puma logs alongside rails logs in GDK

Currently puma logs are emitted to a different location than rails logs.
In development environments, having a single stream of logs for puma
and rails simplifies things and ensures that developers will see puma
errors, instead of having them emitted to a file that is not usually
checked.

config/puma.example.development.rb

@@ -14,9 +14,13 @@
 pidfile '/home/git/gitlab/tmp/pids/puma.pid'
 state_path '/home/git/gitlab/tmp/pids/puma.state'
 
-stdout_redirect '/home/git/gitlab/log/puma.stdout.log',
-  '/home/git/gitlab/log/puma.stderr.log',
-  true
+## Uncomment the lines if you would like to write puma stdout & stderr streams
+## to a different location than rails logs.
+## When using GitLab Development Kit, by default, these logs will be consumed
+## by runit and can be accessed using `gdk tail rails-web`
+# stdout_redirect '/home/git/gitlab/log/puma.stdout.log',
+#  '/home/git/gitlab/log/puma.stderr.log',
+#  true
 
 # Configure "min" to be the minimum number of threads to use to answer
 # requests and "max" the maximum.