Migration load testing (2.3.x)

[brycemcanally]

2.3.x PR for #8292

[codecov]

Codecov Report

Merging #8343 (bc45c7a) into 2.3.x (14a9c24) will decrease coverage by 0.12%.
The diff coverage is 13.69%.

@@            Coverage Diff             @@
##            2.3.x    #8343      +/-   ##
==========================================
- Coverage   22.32%   22.19%   -0.13%     
==========================================
  Files         415      416       +1     
  Lines      112269   113041     +772     
==========================================
+ Hits        25065    25093      +28     
- Misses      82944    83636     +692     
- Partials     4260     4312      +52     

Impacted Files	Coverage Δ
src/internal/ppsload/pipeline.go	0.00% <0.00%> (ø)
src/pps/pps.pb.go	3.12% <0.00%> (-0.02%)	⬇️
src/internal/ppsload/ppsload.pb.go	1.25% <1.25%> (ø)
src/internal/pfsload/pfsload.pb.go	22.90% <19.32%> (-0.55%)	⬇️
src/pfs/pfs.pb.go	36.50% <28.37%> (-0.08%)	⬇️
src/internal/pfsload/commit.go	33.33% <29.16%> (-11.12%)	⬇️
src/server/pfs/cmds/cmds.go	31.35% <33.33%> (+0.07%)	⬆️
src/internal/pfsload/validator.go	65.51% <50.00%> (-1.99%)	⬇️
src/server/pfs/server/api_server.go	63.56% <57.14%> (+0.32%)	⬆️
src/server/pps/cmds/cmds.go	26.57% <66.66%> (+0.11%)	⬆️
... and 26 more

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[FahadBSyed]

I compared the files to master file by file and didn't see anything conspicuous