fix ProprertyUtil checkstyle errors

[chidaodezhongsheng]

fix ProprertyUtil checkstyle errors

[codecov-io]

Codecov Report

Merging #708 into dev will decrease coverage by 0.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##              dev     #708      +/-   ##
==========================================
- Coverage   68.14%   68.13%   -0.02%     
==========================================
  Files         455      455              
  Lines        8723     8723              
  Branches     1411     1411              
==========================================
- Hits         5944     5943       -1     
- Misses       2449     2451       +2     
+ Partials      330      329       -1

Impacted Files	Coverage Δ
...io/shardingjdbc/spring/boot/util/PropertyUtil.java	37.03% <100%> (ø)	⬆️
...c/orchestration/spring/boot/util/PropertyUtil.java	37.03% <100%> (ø)	⬆️
...tion/internal/config/ConfigMapListenerManager.java	60% <0%> (-5%)	⬇️

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