Add default code reviewers into OWNERS

Bug: 33166666
Test: gerrit uploader
Change-Id: Ia262b5234a3cab61258144d4c3fd0cbcd9e7c254
diff --git a/OWNERS b/OWNERS
new file mode 100644
index 0000000..69f4e33
--- /dev/null
+++ b/OWNERS
@@ -0,0 +1,5 @@
+rgl@google.com
+jdanis@google.com
+eranm@google.com
+rubinxu@google.com
+swillden@google.com