Add tests to confirm that genjarjar keeps excluded Tests.

This adds tests for aosp/2498795.

Test: atest jarjar-rules-generator-test
Change-Id: I8077f0e74190bb4f6a35cb6c0d866c7453ca0ca0
diff --git a/tools/Android.bp b/tools/Android.bp
index 3ce76f6..9cc65e0 100644
--- a/tools/Android.bp
+++ b/tools/Android.bp
@@ -79,6 +79,8 @@
     ],
     data: [
         "testdata/test-jarjar-excludes.txt",
+        // txt with Test classes to test they aren't included when added to jarjar excludes
+        "testdata/test-jarjar-excludes-testclass.txt",
         // two unsupportedappusage lists with different classes to test using multiple lists
         "testdata/test-unsupportedappusage.txt",
         "testdata/test-other-unsupportedappusage.txt",