Enable error prone against all CTS harness subproject

Also fix the issue reported with error build current rules.

Test: make cts javac-check -j64 RUN_ERROR_PRONE=true
Bug: 37854485
Change-Id: If5e9ffd6fbf5caf14e9ef88f2e745c000c6a2df8
(cherry picked from commit e6892fd9b35bad58921b4be7abed92a3dd5fc34e)
diff --git a/common/util/tests/Android.mk b/common/util/tests/Android.mk
index 5e3370b..1aca670 100644
--- a/common/util/tests/Android.mk
+++ b/common/util/tests/Android.mk
@@ -23,5 +23,5 @@
 LOCAL_MODULE := compatibility-common-util-tests
 
 LOCAL_MODULE_TAGS := optional
-
+include cts/error_prone_rules.mk
 include $(BUILD_HOST_JAVA_LIBRARY)