leaf: Whitelist hosts from artifact path requirement

Change-Id: Idaa52173a1bf708b02fecf4a05949be70f71a163
diff --git a/config/common.mk b/config/common.mk
index 4d30073..c9cc277 100644
--- a/config/common.mk
+++ b/config/common.mk
@@ -24,6 +24,10 @@
 PRODUCT_COPY_FILES += \
     vendor/leaf/etc/adblock/init.adblock.rc:$(TARGET_COPY_OUT_SYSTEM_EXT)/etc/init/init.adblock.rc
 
+PRODUCT_ARTIFACT_PATH_REQUIREMENT_ALLOWED_LIST += \
+    system/etc/hosts \
+    system/etc/hosts.real
+
 # Apps
 PRODUCT_PACKAGES += \
     Etar \