A few minor tweaks to unit test.
[ci skip]
+//
+// Copyright 2017 Jeff Bush
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
-
-module testbench(input clk, input reset);
+module test_rr_arbiter(input clk, input reset);
localparam NUM_REQUESTERS = 4;
