Update config example

Add OpenVPN and ping probe entries to example config.

Change-Id: I78025027d48a1213b2a23252c8261d9cb4564027
Related: SYS#2655
diff --git a/doc/examples/osmo-sysmon.cfg b/doc/examples/osmo-sysmon.cfg
index e3adab9..f944f72 100644
--- a/doc/examples/osmo-sysmon.cfg
+++ b/doc/examples/osmo-sysmon.cfg
@@ -11,4 +11,6 @@
  get-variable gbproxy-state
 netdev eth0
 netdev tun0
+ping example.com
+openvpn 127.0.0.1 1234
 file os-image /etc/image-datetime