Adds initial usrp ansible role content

Change-Id: I4e1e308aa7e9e2f6db04bc8a344b8a4f8f63c61a
diff --git a/defaults/main.yml b/defaults/main.yml
new file mode 100644
index 0000000..c313f9c
--- /dev/null
+++ b/defaults/main.yml
@@ -0,0 +1,8 @@
+---
+# usrp defaults/main.yml
+#
+# SPDX-FileCopyrightText: © 2021 Open Networking Foundation <support@opennetworking.org>
+# SPDX-License-Identifier: Apache-2.0
+
+usrp_reboot: true
+update_grub: true