Add option to omit feature name from iterations

[leonard84]

No description provided.

[codecov]

Codecov Report

Merging #1386 (d9ee9ce) into master (30fd640) will increase coverage by 0.02%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##             master    #1386      +/-   ##
============================================
+ Coverage     79.28%   79.30%   +0.02%     
- Complexity     3978     3986       +8     
============================================
  Files           403      403              
  Lines         12391    12406      +15     
  Branches       1639     1640       +1     
============================================
+ Hits           9824     9839      +15     
  Misses         1971     1971              
  Partials        596      596              

Impacted Files	Coverage Δ
...rk/runtime/DataVariablesIterationNameProvider.java	100.00% <100.00%> (ø)
...runtime/extension/builtin/UnrollConfiguration.java	100.00% <100.00%> (ø)
...ork/runtime/extension/builtin/UnrollExtension.java	100.00% <100.00%> (ø)
...extension/builtin/UnrollIterationNameProvider.java	100.00% <100.00%> (ø)

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[szpak]

Please update the documentation for parametrized tests (to include those new placeholders).