Add draft completion script

- This is a sample file for completion

Change-Id: I3a61f4987107c6138767339aefef60ef30e0fd72

redfish-client/etc/bash_completion.d/redfish-client.bash

@@ -0,0 +1,11 @@
+_redfish-client_complete_baseopts()
+{
+    case $2 in
+
+        --help|-h)
+            return 0
+            ;;
+
+    esac
+    return 1
+}