Zabbix

.......... [DEV-2006] added test for item automatic type selection and reorganized some tests

Merge in ZBX/zabbix from feature/DEV-2006-5.5 to master

* commit '60c7f8daef11368b4e138dd2d02e6f13cff7de7a':
  .......... [DEV-2006] fixed after review
  .......... [DEV-2006] organized test files
  .......... [DEV-2006] added function description
  .......... [DEV-2006] micro fix
  .......... [DEV-2006] added custom key cases
  .......... [DEV-2006] added test file for item automatic type selection
  .......... [DEV-2006] added test for item automatic type selection