Update OWNERS to be more specific

Still to do ... media/OWNERS

Test: Gerrit works as expected
Change-Id: I2645175569b579764d0298641287e56bfabeab9f
diff --git a/services/minijail/OWNERS b/services/minijail/OWNERS
new file mode 100644
index 0000000..19f4f9f
--- /dev/null
+++ b/services/minijail/OWNERS
@@ -0,0 +1,2 @@
+jorgelo@google.com
+marcone@google.com