adding channel to install-rad functionality

Signed-off-by: willdavsmith <[email protected]>

.github/scripts/install-radius.sh

@@ -1,6 +1,12 @@
-#!/bin/bash
-
 # ------------------------------------------------------------
+# Copyright 2023 The Radius Authors.
+#
+# 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.