Zabbix

.......... [DEV-4904] added integration test for parallel sync and cache warmup on different storage engines with some load

* commit 'f337e72fc7b5abaa692a741680c39bedf8714ac8': (47 commits)
  .......... [DEV-4904] fixed session retrieval
  .......... [DEV-4904] fixed session retrieval
  .......... [DEV-4904] removed redunant code
  .......... [DEV-4904] fixed test name
  .......... [DEV-4904] fixed test name
  .......... [DEV-4904] fixed test name
  .......... [DEV-4904] fixed test name
  .......... [DEV-4904] fixed vps detection interval and missing function
  .......... [DEV-4904] fixed vps detection interval and missing function
  .......... [DEV-4904] fixed test to show how long it takes to sync history
  .......... [DEV-4904] fixed comment
  .......... [DEV-4904] improved value comparison to use exact type instead of float
  .......... [DEV-4904] fixed slow query log
  .......... [DEV-4904] fixed slow zabbix sender
  .......... [DEV-4904] fixed slow zabbix sender
  .......... [DEV-4904] fixed timings
  .......... [DEV-4904] fixed timings
  .......... [DEV-4904] fixed timings
  .......... [DEV-4904] fixed timings
  .......... [DEV-4904] fixed timings
  ...