Adding ONOS Segment Routing CLI files to new repo
diff --git a/cli/documentation/en_US/vns/interface-rule-allow-multiple b/cli/documentation/en_US/vns/interface-rule-allow-multiple
new file mode 100755
index 0000000..31557a9
--- /dev/null
+++ b/cli/documentation/en_US/vns/interface-rule-allow-multiple
@@ -0,0 +1,2 @@
+If allow-multiple is set devices matching this rule are allowed to be in
+multiple VNS at the same time.