Fix issues in renaming jar artifact

[Flanker32]

• Don't rename artifact when its name equals app.jar
• Use File.renameTo instead of FileUtils.rename() as FileUtils will delete the origin file when original file name equalsIgnoreCase with app.jar

[codecov-io]

Codecov Report

Merging #865 into develop will increase coverage by <.01%.
The diff coverage is 0%.

@@              Coverage Diff              @@
##             develop     #865      +/-   ##
=============================================
+ Coverage      44.54%   44.55%   +<.01%     
  Complexity       765      765              
=============================================
  Files            134      134              
  Lines           5170     5169       -1     
  Branches         742      744       +2     
=============================================
  Hits            2303     2303              
+ Misses          2693     2692       -1     
  Partials         174      174

Impacted Files	Coverage Δ	Complexity Δ
...ebapp/handlers/artifact/ArtifactHandlerImplV2.java	0% <0%> (ø)	0 <0> (ø)	⬇️

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[andxu]

Please create the zip file in temp folder during deploying and try to delete it