fix webdav proppatch

[WeidiDeng]

No description provided.

[codecov]

Codecov Report

Merging #1771 (8e9297c) into master (9f6f9ad) will increase coverage by 0.15%.
The diff coverage is 66.66%.

@@            Coverage Diff             @@
##           master    #1771      +/-   ##
==========================================
+ Coverage   88.41%   88.57%   +0.15%     
==========================================
  Files         102      102              
  Lines        8898     8900       +2     
==========================================
+ Hits         7867     7883      +16     
+ Misses        855      842      -13     
+ Partials      176      175       -1     

Impacted Files	Coverage Δ
pkg/cache/driver.go	59.52% <0.00%> (-1.46%)	⬇️
pkg/conf/conf.go	72.72% <ø> (ø)
pkg/cache/redis.go	88.81% <100.00%> (+0.07%)	⬆️

... and 1 file with indirect coverage changes

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[HFO4]

Thanks!