simplify warm_quic_cache_service instantiation

[lijunwangs]

Problem

simplify warm_quic_cache_service instantiation

Summary of Changes

Fixes #

[mergify]

Backports to the stable branch are to be avoided unless absolutely necessary for fixing bugs, security issues, and perf regressions. Changes intended for backport should be structured such that a minimum effective diff can be committed separately from any refactoring, plumbing, cleanup, etc that are not strictly necessary to achieve the goal. Any of the latter should go only into master and ride the normal stabilization schedule.

[mergify]

Backports to the beta branch are to be avoided unless absolutely necessary for fixing bugs, security issues, and perf regressions. Changes intended for backport should be structured such that a minimum effective diff can be committed separately from any refactoring, plumbing, cleanup, etc that are not strictly necessary to achieve the goal. Any of the latter should go only into master and ride the normal stabilization schedule. Exceptions include CI/metrics changes, CLI improvements and documentation updates on a case by case basis.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 90.00000% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 82.0%. Comparing base (8e331e1) to head (0f3f152).
Report is 8 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1063   +/-   ##
=======================================
  Coverage    82.0%    82.0%           
=======================================
  Files         860      860           
  Lines      232898   232892    -6     
=======================================
- Hits       191071   191067    -4     
+ Misses      41827    41825    -2