Zabbix

...G...... [DEV-1496] added basic native telnet support for net.tcp.service/.perf for agent2

* commit 'bb1c28e6f10f5636880bfad98dc2242220b36f4a':
  ...G...... [ZBXNEXT-6080] added change log
  ...G...... [DEV-1496] code clean-up based on PR comments and subtasks
  ...G...... [DEV-1496] fixed darwin testrun for agent2
  ...G...... [DEV-1496] fixed darwin build
  ...G...... [DEV-1496] added net.tcp.service/.perf to plugins for agent 2
  ...G...... [DEV-1496] added darwin init for net.tcp.service/.perf for agent 2
  ...G...... [DEV-1496] enabling net.tcp.service/.perf on darwin for agent 2
  ...G...... [DEV-1496] enabling net.tcp.service/.perf on linux for agent 2
  ...G...... [DEV-1496] code clean up
  ...G...... [DEV-1496] restore proper timeout to net.tcp.service telnet
  ...G...... [DEV-1496] refactor telnet key for net.tcp.service/.perf to closer match c agent
  ...G...... [DEV-1496] logger and code clean-up
  ...G...... [DEV-1496] added correct error for windows and removed unused go pkg
  ...G...... [DEV-1496] code clean-up and better logging
  ...G...... [DEV-1496] changed telnet net.tcp.service/.perf to match c agent
  ...G...... [DEV-1496] added basic native telnet support for net.tcp.service/.perf for agent2