OTEL-2289 fix ocb component build script (DataDog#31941)

test/otel/testdata/ocb_build_script.sh

@@ -4,7 +4,17 @@ OTELCOL_PID=0
 
 mkdir -p /tmp/otel-ci
 trap 'rm -rf /tmp/otel-ci && kill $OTELCOL_PID' EXIT
+
+current_dir=$(pwd)
 cp ./test/otel/testdata/builder-config.yaml /tmp/otel-ci/
+# Get path of all datadog modules, in sorted order, without the initial dot
+dd_mods=$(find . -type f -name "go.mod" -exec dirname {} \; | sort | sed 's/.//')
+echo "replaces:" >> "/tmp/otel-ci/builder-config.yaml"
+for mod in $dd_mods; do
+  echo "- github.com/DataDog/datadog-agent$mod => $current_dir$mod" >> /tmp/otel-ci/builder-config.yaml
+done
+echo "added all datadog-agent modules to ocb builder-config replacements"
+
 cp ./test/otel/testdata/collector-config.yaml /tmp/otel-ci/
 cp ./tools/ci/retry.sh /tmp/otel-ci/
 chmod +x /tmp/otel-ci/retry.sh