Zabbix

.......PS. [DEV-3691] refactored item tag macro substitution in event creation

* commit 'eabb6b7a99d56117d2a10cdc191a114b33e3fcdf':
  .......PS. [DEV-3691] fixed memory leak in macro subtitute_macro_args
  .......PS. [DEV-3691] added another test for macro function with unrecognised macro
  .......PS. [DEV-3691] added cmocka test case for macro functions
  .......PS. [DEV-3691] fixed macro functions
  .......PS. [DEV-3691] removed unnecessary include
  .......PS. [DEV-3691] fixed some style issues
  .......PS. [DEV-3691] fixed includes
  .......PS. [DEV-3691] refactored item tag macro substitution in event creation