add OWNERS to junit

Test: build/make/tools/checkowners.py -c -v OWNERS
Change-Id: I6d5ed2c9c76025cdfd9757dbeb5eb2c5c8887567
diff --git a/OWNERS b/OWNERS
new file mode 100644
index 0000000..d4956db
--- /dev/null
+++ b/OWNERS
@@ -0,0 +1,2 @@
+paulduffin@google.com
+android-libcore-team+review@google.com