Control Agent config-set command does not work when hook is loaded

Version: current master

When Control Agent is configured with a hook (we just have rbac for now) and I try to use config-set command to change any part of a configuration, Control agent reply with:

[
  {
    "result": 1,
    "text": "some libraries are still opened"
  }
]

making any remote reconfiguration of control agent impossible. When hook is not loaded config-set works correctly