more validations for api endpoints

[ddollar]

No description provided.

[codecov]

Codecov Report

Merging #2925 into master will increase coverage by 0.07%.
The diff coverage is 86.66%.

@@            Coverage Diff             @@
##           master    #2925      +/-   ##
==========================================
+ Coverage   31.16%   31.23%   +0.07%     
==========================================
  Files         219      219              
  Lines       20301    20316      +15     
==========================================
+ Hits         6326     6345      +19     
+ Misses      12597    12595       -2     
+ Partials     1378     1376       -2

Impacted Files	Coverage Δ
pkg/api/validation.go	90.9% <86.66%> (-9.1%)	⬇️
pkg/api/controllers.go	63.84% <0%> (+0.87%)	⬆️

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