Adding ONOS Segment Routing CLI files to new repo
diff --git a/cli/documentation/en_US/controller/ip-default-gateway b/cli/documentation/en_US/controller/ip-default-gateway
new file mode 100755
index 0000000..ce8e90c
--- /dev/null
+++ b/cli/documentation/en_US/controller/ip-default-gateway
@@ -0,0 +1 @@
+Configure the default gateway for the controller.