[#4054] make the operationConfig lazy to load

[yanghao605]

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[liubao68]

Would you mind create an PR first for master and than cherry-pick to 2.8.x?

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (76854ff) 74.14% compared to head (6c7023b) 74.14%.

❗ Current head 6c7023b differs from pull request most recent head aa498fc. Consider uploading reports for the commit aa498fc to get more accurate results

Additional details and impacted files

@@            Coverage Diff            @@
##              2.8.x    #4056   +/-   ##
=========================================
  Coverage     74.14%   74.14%           
  Complexity      707      707           
=========================================
  Files          1598     1598           
  Lines         40252    40251    -1     
  Branches       3675     3675           
=========================================
  Hits          29844    29844           
  Misses         8917     8917           
+ Partials       1491     1490    -1     

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[yanghao605]

Would you mind create an PR first for master and than cherry-pick to 2.8.x?

OK