Integrate with the new locations of draft-release and docker-image-update-checker

[sindhushiv]

New Locations:
https://github.com/nginx/draft-release
https://github.com/nginx/docker-image-update-checker

[salonichf5]

after offline discussions with @sindhushiv , @sjberman, @GirishF5, we've decided not to integrate Luca's repositories until we complete the proper legal process for using his open source code and update the forked repo names as advised by the security team.