Mod: modify file name metedata to metadata

[watermelo]

What this PR does:
modify file name metedata to metadata

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

[codecov-commenter]

Codecov Report

Merging #576 into develop will increase coverage by 0.04%.
The diff coverage is 61.87%.

@@             Coverage Diff             @@
##           develop     #576      +/-   ##
===========================================
+ Coverage    66.46%   66.50%   +0.04%     
===========================================
  Files          184      184              
  Lines         9712     9712              
===========================================
+ Hits          6455     6459       +4     
+ Misses        2617     2611       -6     
- Partials       640      642       +2     

Impacted Files	Coverage Δ
cluster/cluster_impl/base_cluster_invoker.go	72.46% <ø> (ø)
cluster/directory/base_directory.go	65.90% <0.00%> (ø)
cluster/loadbalance/consistent_hash.go	90.32% <ø> (ø)
common/config/environment.go	52.38% <ø> (ø)
common/extension/auth.go	0.00% <ø> (ø)
common/extension/cluster.go	0.00% <ø> (ø)
common/extension/config_center.go	0.00% <ø> (ø)
common/extension/config_center_factory.go	0.00% <ø> (ø)
common/extension/config_reader.go	0.00% <ø> (ø)
common/extension/configurator.go	0.00% <ø> (ø)
... and 138 more

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