Update OWNERS file

Test: Manual
Change-Id: I1ce89a40105d03d90d4c2effc34de9508dabc99c
diff --git a/OWNERS b/OWNERS
index 4ec2718..97cc81f 100644
--- a/OWNERS
+++ b/OWNERS
@@ -4,3 +4,5 @@
 chinmayd@google.com
 tjstuart@google.com
 rgreenwalt@google.com
+pmadapurmath@google.com
+grantmenke@google.com