Add test utils script to xTS zips

Test: m cts && unzip android-cts.zip && ./cts-trafed
Change-Id: Iee05bdb03e949eb2f70c9f754190242bc47e5f4e
diff --git a/core/tasks/tools/compatibility.mk b/core/tasks/tools/compatibility.mk
index dd2305e..4e78d89 100644
--- a/core/tasks/tools/compatibility.mk
+++ b/core/tasks/tools/compatibility.mk
@@ -36,6 +36,7 @@
   $(HOST_OUT_JAVA_LIBRARIES)/$(test_suite_tradefed).jar \
   $(HOST_OUT_JAVA_LIBRARIES)/$(test_suite_tradefed)-tests.jar \
   $(HOST_OUT_EXECUTABLES)/$(test_suite_tradefed) \
+  $(HOST_OUT_EXECUTABLES)/test-utils-script \
   $(test_suite_readme)
 
 $(foreach f,$(test_suite_readme),$(if $(strip $(ALL_TARGETS.$(f).META_LIC)),,$(eval ALL_TARGETS.$(f).META_LIC := $(module_license_metadata))))