Add tests for setting KtLint's config

[schalkms]

The tests assert that the config options for KtLints rules are set correctly via detekt.

[codecov-io]

Codecov Report

Merging #2348 into master will increase coverage by 0.16%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master    #2348      +/-   ##
============================================
+ Coverage     82.36%   82.52%   +0.16%     
- Complexity     2134     2141       +7     
============================================
  Files           349      349              
  Lines          6056     6056              
  Branches       1108     1108              
============================================
+ Hits           4988     4998      +10     
+ Misses          489      479      -10     
  Partials        579      579

Impacted Files	Coverage Δ	Complexity Δ
...turbosch/detekt/formatting/wrappers/Indentation.kt	100% <ø> (+44.44%)	4 <0> (+2)	⬆️
...etekt/formatting/wrappers/ParameterListWrapping.kt	100% <ø> (+42.85%)	4 <0> (+2)	⬆️
...ch/detekt/formatting/wrappers/MaximumLineLength.kt	88.88% <ø> (+33.33%)	5 <0> (+3)	⬆️

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[arturbosch]

Nice!