Don't force localization for package tagged as tests.

Change-Id: I612598443371fc388cf08ddde7ebdd1d3dec9c7e
diff --git a/core/package.mk b/core/package.mk
index 0b9036b..24807f9 100644
--- a/core/package.mk
+++ b/core/package.mk
@@ -74,6 +74,11 @@
 
 #$(warning $(LOCAL_PATH) $(LOCAL_PACKAGE_NAME) $(sort $(LOCAL_MODULE_TAGS)))
 
+ifeq ($(filter tests, $(LOCAL_MODULE_TAGS)),)
+# Force localization check if it's not tagged as tests.
+LOCAL_AAPT_FLAGS := $(LOCAL_AAPT_FLAGS) -z
+endif
+
 ifeq (,$(LOCAL_ASSET_DIR))
 LOCAL_ASSET_DIR := $(LOCAL_PATH)/assets
 endif