[autotest] Point stats data to the new stats server.

BUG=chromium:432320
TEST=Run suite from a moblab in the lab and verify that stats are posted to the
     dashboard.

Change-Id: Ic1a072db8efdc3bb062d92867d37bb8473ac0a3d
Reviewed-on: https://chromium-review.googlesource.com/246276
Reviewed-by: Fang Deng <fdeng@chromium.org>
Commit-Queue: Prathmesh Prabhu <pprabhu@chromium.org>
Tested-by: Prathmesh Prabhu <pprabhu@chromium.org>
diff --git a/global_config.ini b/global_config.ini
index 4883d9d..31e70a6 100644
--- a/global_config.ini
+++ b/global_config.ini
@@ -239,10 +239,8 @@
 
 lab_status_url: http://chromiumos-lab.appspot.com/current?format=json
 
-# carbon server feeding Graphite (chromeos-stats.corp.google.com)
-CARBON_SERVER: 172.22.10.48
-CARBON_PORT: 2003
-STATSD_SERVER: 172.22.10.48
+# statsd server feeding Graphite (swift-capsule-791 GCE project)
+STATSD_SERVER: 146.148.70.158
 STATSD_PORT: 8125