It would be nice to have result output for the image boot check

[vpa1977]

The image boot check, e.g.[1] ignores the exception and the process output.
It would be nice to get result in case of exception, as I am encountering a situation where the machine is booted and I can connect to it manually, but testflinger is failing the check.

[1]

testflinger/device-connectors/src/testflinger_device_connectors/devices/cm3/cm3.py

Line 163 in e4a17a4

logger.info("Checking if test image booted.")

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The internal ticket has been created: https://warthogs.atlassian.net/browse/CERTTF-315.

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[jocave]

Adding the following input, in the case of a failed boot check the output looks like:

2024-07-02 17:06:59,014 limerick-zcu106001 INFO: DEVICE CONNECTOR: Checking if test image booted.
Traceback (most recent call last):
  File "/srv/testflinger-agent/limerick-zcu106001/env/bin/testflinger-device-connector", line 8, in <module>
    sys.exit(main())
  File "/srv/testflinger-agent/limerick-zcu106001/env/lib/python3.8/site-packages/testflinger_device_connectors/cmd.py", line 83, in main
    sys.exit(func(args))
  File "/srv/testflinger-agent/limerick-zcu106001/env/lib/python3.8/site-packages/testflinger_device_connectors/devices/__init__.py", line 321, in wrapper
    return func(*args, **kwargs)
  File "/srv/testflinger-agent/limerick-zcu106001/env/lib/python3.8/site-packages/testflinger_device_connectors/devices/muxpi/__init__.py", line 52, in provision
    raise e
  File "/srv/testflinger-agent/limerick-zcu106001/env/lib/python3.8/site-packages/testflinger_device_connectors/devices/muxpi/__init__.py", line 50, in provision
    device.provision()
  File "/srv/testflinger-agent/limerick-zcu106001/env/lib/python3.8/site-packages/testflinger_device_connectors/devices/muxpi/muxpi.py", line 240, in provision
    self.check_test_image_booted()
  File "/srv/testflinger-agent/limerick-zcu106001/env/lib/python3.8/site-packages/testflinger_device_connectors/devices/muxpi/muxpi.py", line 619, in check_test_image_booted
    raise ProvisioningError("Failed to boot test image!")
testflinger_device_connectors.devices.ProvisioningError: Failed to boot test image!

I think it would be better for the user for this traceback to be replaced with details of the what check is performed by the device connector being used, and as request by the OP human understandable details of the exception that occured.