[3.9] Misc/app configure timeout ceil threshold (#6316)

[hlecnt]

Co-authored-by: Andrew Svetlov [email protected].
(cherry picked from commit d3cd8ba)

Co-authored-by: jb [email protected]

What do these changes do?

Are there changes in behavior for the user?

Related issue number

Checklist

• I think the code is well written
• Unit tests for the changes exist
• Documentation reflects the changes
• If you provide code modification, please add yourself to CONTRIBUTORS.txt
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• Add a new news fragment into the CHANGES folder
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