enhance: add the cost response for the rest api

[SimFG]

issue: https://github.com/milvus-io/milvus/issues/30436

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This pull-request has been approved by: SimFG To complete the pull request process, please assign yanliang567 after the PR has been reviewed. You can assign the PR to them by writing /assign @yanliang567 in a comment when ready.

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[codecov[bot]]

Codecov Report

Attention: Patch coverage is 80.00000% with 12 lines in your changes are missing coverage. Please review.

Project coverage is 81.80%. Comparing base (4de063a) to head (8c94e26). Report is 17 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #32620      +/-   ##
==========================================
+ Coverage   81.73%   81.80%   +0.06%     
==========================================
  Files        1002     1005       +3     
  Lines      125438   126607    +1169     
==========================================
+ Hits       102532   103568    +1036     
- Misses      18999    19114     +115     
- Partials     3907     3925      +18     

Files	Coverage Δ
...nternal/distributed/proxy/httpserver/request_v2.go	100.00% <100.00%> (ø)
internal/proxy/util.go	90.74% <100.00%> (+0.06%)	:arrow_up:
...nternal/distributed/proxy/httpserver/handler_v2.go	89.14% <76.47%> (-0.27%)	:arrow_down:

... and 92 files with indirect coverage changes

[PowderLi]

I wonder that there is no need to update restful v1 only restful v2 is required

[PowderLi]

whether return cost or not, should we add a switch to control ?

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@SimFG E2e jenkins job failed, comment /run-cpu-e2e can trigger the job again.

[SimFG]

/run-cpu-e2e

[SimFG]

whether return cost or not, should we add a switch to control ?

I think it is unnecessary, because there is no switch to control the return result of rpc, and this part is not functional. If the return value is controlled by the switch, I think it is a bit strange, and there will be inconsistencies in the functions between the cloud and offline, and there will be compatibility issues.

[czs007]

/approve /lgtm

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: czs007, SimFG

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• ~~internal/distributed/OWNERS~~ [czs007]
• ~~internal/proxy/OWNERS~~ [czs007]

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