Autogen python test config.

Feature request from developer, autogen python test config.

Bug:118442443

Test: $source build/envsetup.sh ; lunch
      $sed -i '/test_config/d' tools/acloud/Android.bp
      $make acloud_test
      $[ -f $ANDROID_HOST_OUT_TESTCASES/acloud_test/acloud_test.config ] && echo "Found" || echo "Not found"

Change-Id: I196230581b456afe03e67f9cd84c028d18ba08d9
diff --git a/tradefed/config.go b/tradefed/config.go
index 2c432d0..141e0c5 100644
--- a/tradefed/config.go
+++ b/tradefed/config.go
@@ -30,6 +30,7 @@
 	pctx.SourcePathVariable("NativeBenchmarkTestConfigTemplate", "build/make/core/native_benchmark_test_config_template.xml")
 	pctx.SourcePathVariable("NativeHostTestConfigTemplate", "build/make/core/native_host_test_config_template.xml")
 	pctx.SourcePathVariable("NativeTestConfigTemplate", "build/make/core/native_test_config_template.xml")
+	pctx.SourcePathVariable("PythonBinaryHostTestConfigTemplate", "build/make/core/python_binary_host_test_config_template.xml")
 
 	pctx.SourcePathVariable("EmptyTestConfig", "build/make/core/empty_test_config.xml")
 }