Fix issue 335 ValueError: (...) is not in list during Bayesian optimization

[stijnh]

This fixes issue #335 related to Bayesian optimization

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

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[fjwillemsen]

I approve this change. The downside is that the resulting sample may contain fewer samples than requested, but this is already addressed in the initial_sample function by replacing any missing samples with random configurations.