enhance: [2.5] Use mockery pkg config for datacoord&datanode (#39567)

[congqixia]

Cherry-pick from master
pr: #39567
Related to #38339

[sre-ci-robot]

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[mergify]

@congqixia go-sdk check failed, comment rerun go-sdk can trigger the job again.

[congqixia]

rerun go-sdk

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.97%. Comparing base (c832793) to head (7a31736).
Report is 1 commits behind head on 2.5.

Additional details and impacted files

@@            Coverage Diff             @@
##              2.5   #39577      +/-   ##
==========================================
- Coverage   80.99%   80.97%   -0.02%     
==========================================
  Files        1404     1404              
  Lines      198041   198041              
==========================================
- Hits       160411   160373      -38     
- Misses      31997    32025      +28     
- Partials     5633     5643      +10     

Components	Coverage Δ
Client	78.26% <ø> (ø)
Core	69.48% <ø> (ø)
Go	82.94% <ø> (-0.03%)	⬇️

see 27 files with indirect coverage changes

[tedxu]

/lgtm