GitLab

Rename compare_build_artifacts directory name.

Since deterministic_build_blacklist.json is used by not only
compare_build_artifacts.py but also remove_build_metadata.py,
let me rename the directory name to determinism to reflect
what this is.

BUG=314403

Review-Url: https://codereview.chromium.org/2260053003
Cr-Commit-Position: refs/heads/master@{#413398}