s3-iremotewinspool: set the per-request memory context
Add a description of the new feature/bug fix. Reference any relevant bugs.
Checklist
- 
Commits have Signed-off-by:with name/author being identical to the commit author
- 
(optional) This MR is just one part towards a larger feature. 
- 
(optional, if backport required) Bugzilla bug filed and BUG:tag added
- 
Test suite updated with functionality tests 
- 
Test suite updated with negative tests 
- 
Documentation updated 
- 
CI timeout is 3h or higher (see Settings/CICD/General pipelines/ Timeout) 
Reviewer's checklist:
- 
There is a test suite reasonably covering new functionality or modifications 
- 
Function naming, parameters, return values, types, etc., are consistent and according to README.Coding.md
- 
This feature/change has adequate documentation added 
- 
No obvious mistakes in the code