Restore 100% test coverage
After !48 (merged) the test coverage dropped to an unacceptable ;P 99%:
Name Stmts Miss Cover Missing
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LbPlatformUtils/__init__.py 116 0 100%
LbPlatformUtils/architectures.py 42 0 100%
LbPlatformUtils/describe.py 64 0 100%
LbPlatformUtils/inspect.py 124 3 98% 255-256, 260
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TOTAL 346 3 99%
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Although the added lines are difficult (not impossible) to test, I'd like to give it a try (or if we do not manage, exclude them from the coverage).