fix circle ci nightly load test jobs (#8117)

[molinamelendezj]

backport to keep circle-ci files in sync

[codecov]

Codecov Report

Merging #8119 (5ab22c6) into 2.3.x (80aee4e) will decrease coverage by 0.00%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##            2.3.x    #8119      +/-   ##
==========================================
- Coverage   22.25%   22.25%   -0.01%     
==========================================
  Files         415      415              
  Lines      112171   112171              
==========================================
- Hits        24967    24962       -5     
- Misses      82916    82922       +6     
+ Partials     4288     4287       -1     

Impacted Files	Coverage Δ
src/internal/dbutil/tx.go	78.57% <0.00%> (-5.72%)	⬇️
src/server/pfs/server/trigger.go	73.21% <0.00%> (-3.58%)	⬇️
src/internal/task/util.go	72.05% <0.00%> (-2.95%)	⬇️
src/internal/dockertestenv/postgres.go	89.16% <0.00%> (-2.50%)	⬇️
src/server/pfs/server/compaction.go	70.71% <0.00%> (-1.11%)	⬇️
src/server/pfs/server/driver.go	66.13% <0.00%> (-0.51%)	⬇️
src/internal/storage/fileset/storage.go	71.95% <0.00%> (ø)
src/server/pfs/server/driver_file.go	74.30% <0.00%> (+0.61%)	⬆️
src/internal/task/etcd_service.go	82.28% <0.00%> (+0.78%)	⬆️
src/server/pfs/server/commit_store.go	80.57% <0.00%> (+1.43%)	⬆️
... and 4 more

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