"20-maas-03-machine-resources" commissioning script improperly reports a Pass when the test fails

Hello,

As the summary states, the "20-maas-03-machine-resources" commissioning script does not appear to do any sort of return code checking, and simply always exits with a status of 0 (success), causing the MAAS interface to report that the test passed. The script assumes that the "$MAAS_BASE_URL/MAAS/machine-resources/$arch" file that it downloads and executes will always run successfully, which is not entirely the case. On my setup, this script is failing to run with the error:
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root@star-ox:~# /tmp/user_data.sh.6xZwIu/scripts/commissioning/20-maas-03-machine-resources
--2022-09-19 15:50:50-- http://192.168.1.1:5248/MAAS/machine-resources/amd64
Connecting to 192.168.1.1:5248... connected.
HTTP request sent, awaiting response... 200 OK
Length: 6885376 (6.6M) [application/octet-stream]
Saving to: ‘/tmp/tmp.orVF15wxE2’

/tmp/tmp.orVF15wxE2 100%[========================================>] 6.57M --.-KB/s in 0.1s

2022-09-19 15:50:50 (45.1 MB/s) - ‘/tmp/tmp.orVF15wxE2’ saved [6885376/6885376]

ERROR: Failed to retrieve network information: Failed to add device information for "/sys/class/net/enp0s10f0/device": Failed to add port info: Failed to ETHTOOL_GLINK: operation not supported
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It took me a while to get to this point since the interface was showing me a green checkmark, indicating that the test was successful.

I would recommend adding some return code checking to the "20-maas-03-machine-resources" script so that it will properly report in the interface whether the test actually passed or not.

Thank you!