tmt-report-result should allow setting a note for the given result

[happz]

Cloned from #4565:

Also it seems that the main test result's Note column content can't be modified when using result:respect. Would it be possible to either extend tmt-report-result to accept a note as an argument which would be added to the main result or provide some other mean for that, for example, using a special name: / subresult (as for result:custom)?

[happz]

@matusmarhefka Out of curiosity, what kind of notes do you expect for your results?

[matusmarhefka]

@matusmarhefka Out of curiosity, what kind of notes do you expect for your results?

@happz Usually plain texts (for example waived fail), in case of errors we put there a Python exception, for example:

RuntimeError: installation failed: [ 242.502633] anaconda[2057]: The installation was stopped due to an error which occurred while running in non-interactive cmdline mode. Since there cannot be any questions in cmdline mode, edit your kickstart file and retry installation.