fix minio with sync

[davies]

When a subpath is specified with Minio, juice sync fails with 403.

TODO: we should enable the unit test with Minio

[codecov-commenter]

Codecov Report

Merging #1055 (f9853e5) into main (ec80f83) will decrease coverage by 0.57%.
The diff coverage is 0.00%.

@@             Coverage Diff              @@
##               main    #1055      +/-   ##
============================================
- Coverage     46.15%   45.58%   -0.58%     
  Complexity      149      149              
============================================
  Files           146      147       +1     
  Lines         23782    23296     -486     
  Branches        422      422              
============================================
- Hits          10977    10619     -358     
+ Misses        11463    11385      -78     
+ Partials       1342     1292      -50     

Impacted Files	Coverage Δ
pkg/object/minio.go	5.88% <0.00%> (+0.16%)	⬆️
pkg/meta/sql.go	68.68% <0.00%> (-1.22%)	⬇️
pkg/vfs/writer.go	78.64% <0.00%> (-1.02%)	⬇️
pkg/vfs/handle.go	85.71% <0.00%> (-0.85%)	⬇️
pkg/chunk/cached_store.go	55.55% <0.00%> (-0.74%)	⬇️
pkg/meta/redis.go	72.24% <0.00%> (-0.66%)	⬇️
pkg/meta/tkv.go	76.92% <0.00%> (-0.33%)	⬇️
pkg/meta/base.go	84.19% <0.00%> (ø)
pkg/utils/utils.go	89.04% <0.00%> (+2.60%)	⬆️
pkg/meta/utils.go	73.00% <0.00%> (+5.52%)	⬆️

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