Zabbix

........S. [DEV-2646] fixed zabbix.stats to include supported part of vps statistics when throttling is disabled, fixed timescale integration tests

Merge in ZBX/zabbix from feature/DEV-2646-6.5 to master

* commit '720d11b546ef662030c978cd740f2ab9ae8ee6eb':
  .........T [DEV-2646] added vps written metric to Zabbix server health templates
  .......... [DEV-2646] fixed timescale integration tests
  .......... [DEV-2646] fixed php style in help items
  ........S. [DEV-2646] fixed zabbix.stats to include supported part of vps statistics when throttling is disabled