Zabbix

.......PS. [ZBX-23085] fixed vmware.datastore.perfcounter and vmware.cl.perfcounter items for custom instances

* commit 'add4c28421664d944d17de6c03c26f50efc1ef52':
  .......PS. [ZBX-23085] fixed error condition of empty query_instance.values_num
  .......PS. [ZBX-23085] minor refactoring
  .......PS. [ZBX-23085] improved logging of zbx_vmware_service_add_perf_counter
  .......PS. [ZBX-23085] fixed issue with multiple instances for single counter
  .......PS. [ZBX-23085] fixed vmware.datastore.perfcounter and vmware.cl.perfcounter items for custom instances