Improve logging output and enable /fpm-ping from localhost

Author: TrafeX

config/fpm-pool.conf

@@ -36,3 +36,9 @@ clear_env = no
 
 ; Catch output from PHP
 catch_workers_output = yes
+
+; Remove the 'child 10 said into stderr' prefix in the log and only show the actual message
+decorate_workers_output = no
+
+; Enable ping page to use in healthcheck
+ping.path = /fpm-ping