[sysmon] Fix wrong type for Puppet config version metric

BUG=chromium:661263
TEST=Run on test drone

Change-Id: Iab9a5c5b3416ed9bcdffdf64fbb1ce8493b088fd
Reviewed-on: https://chromium-review.googlesource.com/405697
Commit-Ready: Allen Li <ayatane@chromium.org>
Tested-by: Allen Li <ayatane@chromium.org>
Reviewed-by: Allen Li <ayatane@chromium.org>
Reviewed-by: Aviv Keshet <akeshet@chromium.org>
diff --git a/scripts/sysmon/system_metrics.py b/scripts/sysmon/system_metrics.py
index 4caf6da..d657ecf 100644
--- a/scripts/sysmon/system_metrics.py
+++ b/scripts/sysmon/system_metrics.py
@@ -310,6 +310,7 @@
     if _is_autoserv_proc(proc):
       autoserv_count += 1
     total += 1
+  logging.debug('autoserv_count: %s', autoserv_count)
   _autoserv_proc_count_metric.set(autoserv_count)
   _proc_count_metric.set(total)