Add releasetools_test to TEST_MAPPING

Test: treehugger
Change-Id: I3a0f9e9e5dd8d49c22f466aa0605768fee3f4821
diff --git a/tools/releasetools/Android.bp b/tools/releasetools/Android.bp
index 473d854..60378b8 100644
--- a/tools/releasetools/Android.bp
+++ b/tools/releasetools/Android.bp
@@ -568,6 +568,7 @@
     name: "releasetools_test",
     defaults: ["releasetools_test_defaults"],
     main: "test_utils.py",
+    test_suites: ["general-tests"],
     version: {
         py2: {
             enabled: true,
@@ -590,6 +591,7 @@
     name: "releasetools_py3_test",
     defaults: ["releasetools_test_defaults"],
     main: "test_utils.py",
+    test_suites: ["general-tests"],
     version: {
         py2: {
             enabled: false,