src/hooks/dhcp/high_availability/ha_messages.mes
    Removed HA_SERVICE_CONNECT_INVALID_SOCKET message

src/hooks/dhcp/high_availability/ha_service.cc
    HAService::clientConnectHandler() - now just avoids registering
    an invalid FD with no log and return(true)

src/lib/http/client.cc
    Added commen in Connection::close()

src/lib/http/tests/server_client_unittests.cc
    Removed invalid FD failure in test