Replace environmental variables `FROM_SHA` and `TO_SHA` in favour of command line flags `--from-sha` and `--to-sha` respectively
requested to merge gitlab-community/gitlab-elasticsearch-indexer:add-flags-"from-sha"-and-"to-sha" into main
What does this MR do and why?
Make changes such that flags --from-sha and --to-sha are the new way to send value, instead of using environmental variables FROM_SHA and TO_SHA, as they are not environment configuration information.
References #106 (closed) and gitlab#372873 (closed)
Pinging @terrichu for review
Edited by Ashvith