[#554] feat: infer rss base storage conf from env

[advancedxy]

What changes were proposed in this pull request?

new method getConfiguredLocalDirs is added to retrieve rss base storage path from env first

Why are the changes needed?

Fixes #554

Does this PR introduce any user-facing change?

RSS admin may specify rss base path for shuffle server when deploying

How was this patch tested?

Added UT.

[codecov-commenter]

Codecov Report

Merging #555 (8b62edc) into master (ebbe2db) will increase coverage by 0.30%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##             master     #555      +/-   ##
============================================
+ Coverage     60.21%   60.52%   +0.30%     
+ Complexity     1784     1570     -214     
============================================
  Files           205      191      -14     
  Lines         11557    10532    -1025     
  Branches       1042      886     -156     
============================================
- Hits           6959     6374     -585     
+ Misses         4190     3793     -397     
+ Partials        408      365      -43     

Impacted Files	Coverage Δ
...java/org/apache/uniffle/common/config/RssConf.java	32.41% <100.00%> (+0.46%)	⬆️
.../java/org/apache/uniffle/common/util/RssUtils.java	59.31% <100.00%> (+0.85%)	⬆️
...org/apache/uniffle/server/LocalStorageChecker.java	70.19% <100.00%> (ø)
...org/apache/uniffle/server/ShuffleFlushManager.java	84.37% <100.00%> (ø)
...he/uniffle/server/storage/LocalStorageManager.java	85.87% <100.00%> (ø)
...storage/handler/impl/DataSkippableReadHandler.java	83.78% <0.00%> (-2.71%)	⬇️
.../apache/uniffle/coordinator/ClientConfManager.java	91.54% <0.00%> (-1.41%)	⬇️
...he/uniffle/client/impl/ShuffleWriteClientImpl.java	34.44% <0.00%> (-0.51%)	⬇️
...a/org/apache/uniffle/common/ShuffleServerInfo.java	75.00% <0.00%> (ø)
... and 43 more

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[advancedxy]

gently ping @kaijchen

[kaijchen]

LGTM