Migration to backfill users into elastic index
What does this MR do and why?
Adds an elastic migration to backfill all users into elasticsearch.
We have recently created a user index which will be used to perform advanced search for users. This MR is to get the data ready for searching.
Releasing
Merge !102515 (merged) before this MR.
Before this MR is merged, feature flag index_user_callback
has to be enabled fully in staging and production.
MR acceptance checklist
This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.
-
I have evaluated the MR acceptance checklist for this MR.
Related to #359820 (closed)