Dist the otatools package.

Bug: 23495952

(cherry picked from commit 267e957373765ad1e3ce89abe61886a305277027)

Change-Id: I49fcb9fed599268a9d37de7b14280eeb65c34788
diff --git a/core/main.mk b/core/main.mk
index 9d6e233..537a116 100644
--- a/core/main.mk
+++ b/core/main.mk
@@ -957,6 +957,7 @@
   $(call dist-for-goals, droidcore, \
     $(INTERNAL_UPDATE_PACKAGE_TARGET) \
     $(INTERNAL_OTA_PACKAGE_TARGET) \
+    $(BUILT_OTATOOLS_PACKAGE) \
     $(SYMBOLS_ZIP) \
     $(INSTALLED_FILES_FILE) \
     $(INSTALLED_BUILD_PROP_TARGET) \