AV1 RT: Explicitly enable CDEF in E2E tests

In google3 CDEF is disabled by default. This lead to E2E PSNR test
failures unless CDEF is explicitly disabled. No impact on git-based
builds as CDEF is enabled there by default. No impact on WebRTC builds
as CDEF is explicitly enabled in the wrapper

BUG=b/164462622

Change-Id: I7550da8cb45c834ec15c7cf3e56db3ddb9867a20
diff --git a/test/rt_end_to_end_test.cc b/test/rt_end_to_end_test.cc
index 81f5c7e..f8820c5 100644
--- a/test/rt_end_to_end_test.cc
+++ b/test/rt_end_to_end_test.cc
@@ -115,6 +115,7 @@
       encoder->Control(AV1E_SET_TUNE_CONTENT, AOM_CONTENT_DEFAULT);
       encoder->Control(AV1E_SET_AQ_MODE, aq_mode_);
       encoder->Control(AV1E_SET_ROW_MT, 1);
+      encoder->Control(AV1E_SET_ENABLE_CDEF, 1);
     }
   }