Zabbix

.......PS. [ZBXNEXT-2880] fixed clang warnings and CHelpItems.php

* commit 'c57619b8e1d4f8d77999ee8486e5b4379c401704':
  .......PS. [ZBXNEXT-2880] changed function check_vcenter_hv_datastore_latency() to static
  .......PS. [ZBXNEXT-2880] fixed clang warnings
  .......PS. [ZBXNEXT-2880] added entries in 'CHelpItems.php'

(cherry picked from commit 029905e2788d18ee8b19422eda1645488f7fbd26)
(cherry picked from commit 8741da731be9d6c6ab713ff90e26048a46fcd3ac)