Update default image preprocessing

[frankfliu]

Change-Id: I79144cd8b1353a08b8232ee0372641abb6c6b55e

Description

Brief description of what this PR is about

• If this change is a backward incompatible change, why must this change be made?
• Interesting edge cases to note here

[codecov-commenter]

Codecov Report

Merging #1268 (49889e9) into master (9aaaa66) will increase coverage by 0.02%.
The diff coverage is 40.00%.

@@             Coverage Diff              @@
##             master    #1268      +/-   ##
============================================
+ Coverage     71.99%   72.02%   +0.02%     
- Complexity     5114     5118       +4     
============================================
  Files           473      473              
  Lines         21913    21920       +7     
  Branches       2345     2347       +2     
============================================
+ Hits          15777    15788      +11     
+ Misses         4932     4927       -5     
- Partials       1204     1205       +1     

Impacted Files	Coverage Δ
...jl/modality/cv/translator/BaseImageTranslator.java	77.95% <40.00%> (-3.72%)	⬇️
api/src/main/java/ai/djl/inference/Predictor.java	88.46% <0.00%> (-2.89%)	⬇️
...mark/src/main/java/ai/djl/benchmark/Arguments.java	88.94% <0.00%> (+0.52%)	⬆️
.../main/java/ai/djl/benchmark/AbstractBenchmark.java	91.17% <0.00%> (+1.17%)	⬆️
...ain/java/ai/djl/modality/cv/util/NDImageUtils.java	59.21% <0.00%> (+10.52%)	⬆️
.../java/ai/djl/modality/cv/transform/CenterCrop.java	100.00% <0.00%> (+18.18%)	⬆️

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