Add SurfaceFlinger test filter for presubmit.

HWC2 tests and SurfaceInterceptor tests aren't yet passing. See
second attached bug for more context on test filters for pre-submit.

Test: Verify Surfaceflinger_test.filter appears in output folder after build.
Bug: 36117490
Bug: 36359778
Change-Id: If3199d7c005722c235f065766f2961e2ed2d6e0d
diff --git a/services/surfaceflinger/tests/SurfaceFlinger_test.filter b/services/surfaceflinger/tests/SurfaceFlinger_test.filter
new file mode 100644
index 0000000..915b5cd
--- /dev/null
+++ b/services/surfaceflinger/tests/SurfaceFlinger_test.filter
@@ -0,0 +1,5 @@
+{
+        "presubmit": {
+            "filter": "LayerUpdateTest.*:ChildLayerTest.*:SurfaceFlingerStress.*" 
+        }
+}
\ No newline at end of file