Zabbix

.....J.PS. [DEV-4848] improved validation of snmptrap payload

* commit '4a2fe32cec162b884cc4c5e59103f7ab2ce7a47f':
  .....J.... [DEV-4848] improved snmp trap parsing
  .....J.... [DEV-4848] improved regexp
  .....J.... [DEV-4848] improved validation of snmptrap payload in zabbix_trap_receiver.pl

(cherry picked from commit 796945a10a7e76f5ba65d45e4fff8d17c6f90e51)
(cherry picked from commit ca98dcaca7ab8b995e4171b650a823e8e96cc6eb)