Issue #4150: Split and Organize Checkstyle inputs by Test for LocalVariableName

[Kietzmann]

This pull request covers to issue #4150
What was modified:

1. Modified paths to test classes
2. Moved all necessary inputs into /localvariablename package

Results:

All unit tests passed.
the result of mvn clean verify -> Tests run: 103, Failures: 0, Errors: 0, Skipped: 0

[codecov-io]

Codecov Report

Merging #4179 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff           @@
##           master   #4179   +/-   ##
======================================
  Coverage     100%    100%           
======================================
  Files         283     283           
  Lines       14880   14880           
  Branches     3401    3401           
======================================
  Hits        14880   14880

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