Build cts-tradefed README into cts.zip

Change-Id: Idd2d36a021eb706846673a1ebc417a1f4c3b9d38
diff --git a/core/tasks/cts.mk b/core/tasks/cts.mk
index b1b2fc1..8d7667b 100644
--- a/core/tasks/cts.mk
+++ b/core/tasks/cts.mk
@@ -31,6 +31,7 @@
 TF_JAR := $(HOST_OUT_JAVA_LIBRARIES)/tradefed-prebuilt.jar
 CTS_TF_JAR := $(HOST_OUT_JAVA_LIBRARIES)/cts-tradefed.jar
 CTS_TF_EXEC_PATH := $(HOST_OUT_EXECUTABLES)/cts-tradefed
+CTS_TF_README_PATH := $(cts_tools_src_dir)/tradefed-host/README
 
 CTS_CORE_CASE_LIST := \
 	android.core.tests.dom \
@@ -49,7 +50,7 @@
 $(cts_dir)/all_cts_files_stamp: PRIVATE_JUNIT_HOST_JAR := $(junit_host_jar)
 
 -include cts/CtsHostLibraryList.mk
-$(cts_dir)/all_cts_files_stamp: $(CTS_CASE_LIST) $(junit_host_jar) $(HOSTTESTLIB_JAR) $(CTS_HOST_LIBRARY_JARS) $(TF_JAR) $(CTS_TF_JAR) $(CTS_TF_EXEC_PATH) $(ACP)
+$(cts_dir)/all_cts_files_stamp: $(CTS_CASE_LIST) $(junit_host_jar) $(HOSTTESTLIB_JAR) $(CTS_HOST_LIBRARY_JARS) $(TF_JAR) $(CTS_TF_JAR) $(CTS_TF_EXEC_PATH) $(CTS_TF_README_PATH) $(ACP)
 # Make necessary directory for CTS
 	$(hide) rm -rf $(PRIVATE_CTS_DIR)
 	$(hide) mkdir -p $(TMP_DIR)
@@ -58,7 +59,7 @@
 	$(hide) mkdir -p $(PRIVATE_DIR)/repository/testcases
 	$(hide) mkdir -p $(PRIVATE_DIR)/repository/plans
 # Copy executable and JARs to CTS directory
-	$(hide) $(ACP) -fp $(CTS_HOST_JAR) $(CTS_EXECUTABLE_PATH) $(DDMLIB_JAR) $(PRIVATE_JUNIT_HOST_JAR) $(HOSTTESTLIB_JAR) $(CTS_HOST_LIBRARY_JARS) $(TF_JAR) $(CTS_TF_JAR) $(CTS_TF_EXEC_PATH) $(PRIVATE_DIR)/tools
+	$(hide) $(ACP) -fp $(CTS_HOST_JAR) $(CTS_EXECUTABLE_PATH) $(DDMLIB_JAR) $(PRIVATE_JUNIT_HOST_JAR) $(HOSTTESTLIB_JAR) $(CTS_HOST_LIBRARY_JARS) $(TF_JAR) $(CTS_TF_JAR) $(CTS_TF_EXEC_PATH) $(CTS_TF_README_PATH) $(PRIVATE_DIR)/tools
 # Change mode of the executables
 	$(hide) chmod ug+rwX $(PRIVATE_DIR)/tools/$(notdir $(CTS_EXECUTABLE_PATH))
 	$(foreach apk,$(CTS_CASE_LIST), \