This commit puts responsibility on anything with a .connect method
to raise its own ConnectionTimeoutError, to be then picked up by
the DeviceCollector, or not. This simplifies the complex error
handling requiring timeouts to be handled at the asyncio level and
passed up the called via (now redefined) NotConnected exceptions.

Connection timeouts now result in a logging.debug, all other exceptions result
in a logging.exception. All the errors are propogated to the device collector or top
level device and a formatted NotConnected error is outputted