HH-46351 remove server.main app parameter
HH-44167 remove init.d script
Merge remote-tracking branch 'origin/HH-46351' into EXP-12343
release 2.21.1 [an.sumin@hh.ru]
Merge remote-tracking branch 'origin/HH-44167' into EXP-12378
release 2.21.2 [an.sumin@hh.ru]
HH-44646 add MicroHandler implementation
HH-44646 use namedtuple as _Request base