Zabbix

........S. [DEV-4638] fixed excessive warnings during autoregistration host addition

* commit '894a27865994f3ad2ce1c52856ed57b7b13cb900': (21 commits)
  ........S. [DEV-4638] fixed SQL request
  ........S. [DEV-4638] added forgotten line
  ........S. [DEV-4638] fixed docstrings
  ........S. [DEV-4638] fixed some issues
  ........S. [DEV-4638] improved compactness of code
  ........S. [DEV-4638] fixed some errors
  ........S. [DEV-4638] removed brackets
  ........S. [DEV-4638] removed status variable
  ........S. [DEV-4638] refactored operation functions
  ........S. [DEV-4638] updated op_host_add() function
  ........S. [DEV-4638] refactored ensure_host_for_operation()
  ........S. [DEV-4638] updated funstions list
  ........S. [DEV-4638] removed ensure_discovered_host()
  ........S. [DEV-4638] refactored code solution
  ........S. [DEV-4638] updated op_host_add() function
  ........S. [DEV-4638] updated ensure_host_for_operation() function
  ........S. [DEV-4638] updated solution to remove logging message duplication
  ........S. [DEV-4638] removed default case
  ........S. [DEV-4638] updated ensure_discovered_host() description
  ........S. [DEV-4638] removed hostid check
  ...