test: use p2p constants in denial of service tests
test: use p2p constants in denial of service tests

Former-commit-id: b94b8f6573946d6be44c1f6a051c50ff73817e59
syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin