mystamps-candidate.war shouldn't write logs to a production log file

[php-coder]

Candidate WAR shouldn't write to a production log file (only to stdout):

$ grep candidate /data/logs/mystamps.log
2022-12-19 07:48:02.661 [user:  ]  INFO 26615 --- [main] r.m.w.s.s.boot.ApplicationBootstrap      : Starting ApplicationBootstrap v0.4.7-SNAPSHOT on my-stamps.ru with PID 26615 (/data/mystamps/mystamps-candidate.war started by mystamps in /data/mystamps)

Relate to #383