fix: CI: make test-unit-rest actually be the rest of the tests

[arajasek]

Related Issues

unit-rest is supposed to be a catch-all suite for all remaining tests. We currently run all the tests in unit-node, unit-storage, and unit-cli a second time in unit-rest, because we populate the exclusion map with absolute paths, but WalkDir checks against relative paths.

Proposed Changes

Populate the map with both absolute and relative paths, thus avoiding all this duplicated work

Additional Info

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[Stebalien]

This makes sense, and I guess we likely don't want to test extern? Or do we?

[arajasek]

This makes sense, and I guess we likely don't want to test extern? Or do we?

I don't think we do -- those tests are independently covered.