test: allow Docker stop transport overhead

tests/test_addon_metadata.py

@@ -283,6 +283,9 @@ def test_runtime_requires_process_baseline_after_cdp_close_and_zero_stopped_pid(
         assert mapping_index < ready_index < baseline_index < close_index < return_index
     assert "{{.State.Pid}}" in runtime_test
     assert '[ "$state" = "exited 0 0" ]' in runtime_test
+    assert 'docker stop --time 10 "$container"' in runtime_test
+    assert "if float(sys.argv[1]) > 12.0:" in runtime_test
+    assert "container stop exceeded 12 seconds" in runtime_test
 
 
 def test_runtime_process_normalization_retains_every_unknown_wrapped_child(

tests/test_runtime.sh

@@ -345,8 +345,8 @@ PY
     printf 'seconds=%s\n' "$elapsed" > "$timing_artifact"
     python3 - "$elapsed" <<'PY'
 import sys
-if float(sys.argv[1]) > 10.0:
-    raise SystemExit(f"container stop exceeded 10 seconds: {sys.argv[1]}")
+if float(sys.argv[1]) > 12.0:
+    raise SystemExit(f"container stop exceeded 12 seconds: {sys.argv[1]}")
 PY
     state="$(docker inspect --format '{{.State.Status}} {{.State.ExitCode}} {{.State.Pid}}' "$container")"
     [ "$state" = "exited 0 0" ] || fail "$container state is $state, want exited 0 with PID 0"