Add vts-core-tradefed.jar to general-tests.zip

This is needed for vts-core tests require vts specific preparers.

Bug: 142972256
Test: m -j general-tests
Change-Id: Ic2def11ac5f57a923d2bcefe6683e9a5fa66e7c6
diff --git a/core/tasks/general-tests.mk b/core/tasks/general-tests.mk
index 9ea4e62..7bcc915 100644
--- a/core/tasks/general-tests.mk
+++ b/core/tasks/general-tests.mk
@@ -17,6 +17,7 @@
 general_tests_tools := \
     $(HOST_OUT_JAVA_LIBRARIES)/cts-tradefed.jar \
     $(HOST_OUT_JAVA_LIBRARIES)/compatibility-host-util.jar \
+    $(HOST_OUT_JAVA_LIBRARIES)/vts-core-tradefed.jar \
 
 intermediates_dir := $(call intermediates-dir-for,PACKAGING,general-tests)
 general_tests_zip := $(PRODUCT_OUT)/general-tests.zip