Add candidate and baseline commit info to PR comment

.gitlab/scripts/analyze-results.sh

@@ -8,21 +8,34 @@ mkdir "${REPORTS_DIR}" || :
 # @see https://github.com/DataDog/relenv-benchmark-analyzer#what-is-a-significant-difference
 UNCONFIDENCE_THRESHOLD=2.0
 
-BASELINE_BRANCH=$(github-find-merge-into-branch --for-repo="$CI_PROJECT_NAME" --for-pr="$CI_COMMIT_REF_NAME" || :)
+CANDIDATE_COMMIT_SHA=$CI_COMMIT_SHA
+CANDIDATE_BRANCH=$CI_COMMIT_REF_NAME
+
+cd dd-trace-go/ddtrace/tracer/
+BASELINE_COMMIT_SHA=$(git rev-parse HEAD)
+BASELINE_BRANCH=$(github-find-merge-into-branch --for-repo="$CI_PROJECT_NAME" --for-pr="$CANDIDATE_BRANCH" || :)
 
 source /benchmark-analyzer/.venv/bin/activate
 cd /benchmark-analyzer
 
 ./benchmark_analyzer convert \
   --framework=GoBench \
+  --extra-params="{\
+    \"config\":\"candidate\", \
+    \"git_commit_sha\":\"$CANDIDATE_COMMIT_SHA\", \
+    \"git_branch\":\"$CANDIDATE_BRANCH\"\
+    }" \
   --outpath="pr.json" \
-  --extra-params="{\"dd_trace_go\":\"${CI_COMMIT_REF_NAME}\"}" \
   "${ARTIFACTS_DIR}/pr_bench.txt"
 
 ./benchmark_analyzer convert \
   --framework=GoBench \
+  --extra-params="{\
+    \"config\":\"baseline\", \
+    \"git_commit_sha\":\"$BASELINE_COMMIT_SHA\", \
+    \"git_branch\":\"$BASELINE_BRANCH\"\
+    }" \
   --outpath="main.json" \
-  --extra-params="{\"dd_trace_go\":\"main\"}" \
   "${ARTIFACTS_DIR}/main_bench.txt"
 
 ./benchmark_analyzer compare pairwise --outpath ${REPORTS_DIR}/report.md --format md-nodejs main.json pr.json