Setup OWNERS for CDM and AutoRevoke tests

Test: presubmit
Change-Id: I00de769c56dbbd0cd5a53d0a9a87db3190348d6c
diff --git a/tests/tests/os/OWNERS b/tests/tests/os/OWNERS
new file mode 100644
index 0000000..3429892
--- /dev/null
+++ b/tests/tests/os/OWNERS
@@ -0,0 +1,4 @@
+per-file *AutoRevoke* = eugenesusla@google.com
+per-file *Companion* = eugenesusla@google.com
+per-file *AndroidManifest.xml = eugenesusla@google.com
+per-file *CtsOsTestCases.xml = eugenesusla@google.com