src/bin/dhcp6/ctrl_dhcp6_srv.cc
    ControlledDhcpv6Srv::commandSetConfigHandler()
    - Add logger config
    - Use processConfig() directly instead of config-reload command

src/bin/dhcp6/kea_controller.cc
    configure(const std::string& file_name)
      - Remove logger config
      - Use set-config command instead of config-reload

src/bin/dhcp6/tests/ctrl_dhcp6_srv_unittest.cc
    createUnixChannelServer()
    - added call to initLogger() to revert logging to unit test logger

src/bin/dhcp6/tests/dhcp6_test_utils.cc
    BaseServerTest::~BaseServerTest() {
    - added call to initLogger() to revert logging to unit test logger