Support 'test_config' into soong modules

Test: make general-tests
Bug: 110982517
Change-Id: Ib2eab2653fdfce6f699b85c9fbc64558b6d40363

java/java.go

@@ -1352,6 +1352,10 @@ type testProperties struct {
 	// list of compatibility suites (for example "cts", "vts") that the module should be
 	// installed into.
 	Test_suites []string `android:"arch_variant"`
+
+	// the name of the test configuration (for example "AndroidTest.xml") that should be
+	// installed with the module.
+	Test_config *string `android:"arch_variant"`
 }
 
 type Test struct {