test: add tests for datacarrier and datacarriersize options

Co-authored-by: Sebastian Falbesoner <sebastian.falbesoner@gmail.com>

test/functional/test_runner.py

@@ -320,6 +320,7 @@ BASE_SCRIPTS = [
     'feature_unsupported_utxo_db.py',
     'feature_logging.py',
     'feature_anchors.py',
+    'mempool_datacarrier.py',
     'feature_coinstatsindex.py',
     'wallet_orphanedreward.py',
     'wallet_timelock.py',