metrics: add bsimonnet to OWNERS

BUG=None
TEST=None

Change-Id: I9e89ac959c352560a29e46fa3ea56a91a65c8941
Reviewed-on: https://chromium-review.googlesource.com/216583
Reviewed-by: Daniel Erat <derat@chromium.org>
Tested-by: Bertrand Simonnet <bsimonnet@chromium.org>
Commit-Queue: Bertrand Simonnet <bsimonnet@chromium.org>
diff --git a/metrics/OWNERS b/metrics/OWNERS
index a680f7c..7f5e50d 100644
--- a/metrics/OWNERS
+++ b/metrics/OWNERS
@@ -1,2 +1,3 @@
 semenzato@chromium.org
 derat@chromium.org
+bsimonnet@chromium.org