Call the new probe_switches() method

Change-Id: I4af94a8cb7ffb056789f6c8fcdfb98a68576029d
diff --git a/util.py b/util.py
index a938732..3b354cd 100644
--- a/util.py
+++ b/util.py
@@ -102,6 +102,8 @@
                 ret['version'] = state.version
             elif command == 'daemon.statistics':
                 ret['uptime'] = time.time() - state.starttime
+            elif command == 'daemon.probe_switches':
+                ret = self.probe_switches(state)
             else:
                 raise InputError("Unknown daemon_query command \"%s\"" % command)