[CI Problem] gallery/how_to/work_with_microtvm/micro_tvmc.sh fails silently

[mehrdadh]

I noticed that this script is failing since zephyr_board project option was replaced with board but we haven't fixed it in this tutorial. However, failure is not caught in CI even though it is running in this script: tests/scripts/task_python_microtvm.sh
We need to do more investigation here.

cc @driazati

[mehrdadh]

I can see the failure here but it doesn't fail in the CI:
https://ci.tlcpack.ai/blue/rest/organizations/jenkins/pipelines/tvm-cortexm/branches/PR-14076/runs/1/nodes/105/steps/384/log/?start=0

conv2d NHWC layout is not optimized for x86 with autotvm.
[2023-02-22T01:54:59.910Z] One or more operators have not been tuned. Please tune your model for better performance. Use DEBUG logging level to see more details.
[2023-02-22T01:55:00.844Z] Error: Option 'board' is required but was not specified. Use --list-options to see all required options.
[2023-02-22T01:55:01.102Z] + python3 gallery/how_to/work_with_microtvm/micro_mlperftiny.py