chore: improve application readability

[yyzxw]

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[codecov]

Codecov Report

Patch coverage: 68.96% and project coverage change: +0.03% 🎉

Comparison is base (24c080b) 49.86% compared to head (6cc0789) 49.89%.
Report is 4 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #14750      +/-   ##
==========================================
+ Coverage   49.86%   49.89%   +0.03%     
==========================================
  Files         263      263              
  Lines       45190    45195       +5     
==========================================
+ Hits        22535    22552      +17     
+ Misses      20437    20424      -13     
- Partials     2218     2219       +1     

Files Changed	Coverage Δ
server/application/logs.go	86.86% <50.00%> (ø)
server/application/application.go	51.42% <57.89%> (+0.55%)	⬆️
pkg/apis/application/v1alpha1/types.go	59.09% <100.00%> (+0.25%)	⬆️

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[jannfis]

Thanks a lot, @yyzxw. I like these improvements in readability and the added tests.

I have one concern, PTAL.

[ishitasequeira]

Changes look good!! One small nit.