Deal with Rails autoload instance variable resets
What does this MR do?
Rails auto-load (a development feature) can end up resetting instance variables on classes. This breaks Gitlab::GitalyClient, which uses instance variables to keep global hashes to look up channels and addresses. This change adds code that regenerates the hashes if they suddenly become nil.
Are there points in the code the reviewer needs to double check?
Why was this MR needed?
Screenshots (if relevant)
Does this MR meet the acceptance criteria?
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Changelog entry added, if necessary -
Documentation created/updated -
API support added - Tests
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Added for this feature/bug -
All builds are passing
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Conform by the merge request performance guides -
Conform by the style guides -
Branch has no merge conflicts with master(if it does - rebase it please) -
Squashed related commits together