These files need to be deployed into your Android source code directory to ensure build.prop file on the device contains the correct URL for receiving OTA updates.
- Create the directory lineage/vendor/extra
- Review and edit the contents of file product.prop to ensure the URL is what you want your device pointed to.
- Place the product.mk and product.prop files in this directory
The files will then be automatically read by the build system and patch build.prop with the updated URL.