License scan test generates PR that incorrectly deletes baseline file

[mthalman]

Example PR: dotnet/dotnet#375, specifically commit dotnet/dotnet@112cec1.

This happens when a repo in the VMR has a license baseline file associated with it and the license scan job for that repo has some kind of failure which causes it to not produce an updated baseline file.

For example, in this pipeline run (internal link), there were timeout errors for a few .il files. This caused the exit code of scancode to be non-zero which prevented the test from continuing to produce an updated baseline file. Since no updated baseline file exists for that job, the PR publishing logic assumes that the baseline file is no longer needed and deletes it from the repo. There needs to be recognition that scancode failed and no changes should be made for that repo's baseline.

[ellahathaway]

Maybe we can use a different exit code on timeout that the PR baseline update tool can take as input?

[Winniexu01]

Fixed by dotnet/dotnet#331

[ellahathaway]

Fixed by dotnet/dotnet#331

This issue was not closed by that PR. This issue is about files being deleted when license scan fails. The linked PR solved the issue of files being deleted when the full file tree was not being gathered.