Fix detektBaseline task filtering .java files

[cortinico]

The util functions Project.registerDetektTask and Project.registerCreateBaselineTask are used to register detekt and detektBaseline tasks on the applied Gradle project.

Due to (I suppose) legacy reason, the registerCreateBaselineTask was still declaring excludes and includes while the registerDetektTask function was updated.

This caused the input source for the detektBaseline to have all the .java files filtered out (resulting in issues like #3130) and generally a different inspection from the one performed by the plain detekt task.

Fixes #3130

[codecov]

Codecov Report

Merging #3185 into master will increase coverage by 0.01%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master    #3185      +/-   ##
============================================
+ Coverage     79.53%   79.55%   +0.01%     
  Complexity     2631     2631              
============================================
  Files           440      440              
  Lines          7966     7964       -2     
  Branches       1521     1521              
============================================
  Hits           6336     6336              
+ Misses          820      818       -2     
  Partials        810      810              

Impacted Files	Coverage Δ	Complexity Δ
...o/gitlab/arturbosch/detekt/internal/SharedTasks.kt	57.14% <ø> (+4.96%)	0.00 <0.00> (ø)

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