FIX: Correctly connect JoinNodes in nested iterables

[effigies]

Fixes #2578
Follow-up to #2479

Changes proposed in this pull request

• Narrow node name check to ensure JoinNodes aren't excluded incorrectly
• Add test

[effigies]

@tclose Can you verify that this resolves your issue?

[codecov-io]

Codecov Report

Merging #2597 into master will decrease coverage by 0.01%.
The diff coverage is 0%.

@@            Coverage Diff            @@
##           master   #2597      +/-   ##
=========================================
- Coverage   67.62%   67.6%   -0.02%     
=========================================
  Files         336     336              
  Lines       42711   42711              
  Branches     5278    5278              
=========================================
- Hits        28883   28875       -8     
- Misses      13151   13158       +7     
- Partials      677     678       +1

Flag	Coverage Δ
#smoketests	50.74% <0%> (ø)	⬆️
#unittests	65.08% <0%> (-0.02%)	⬇️

Impacted Files	Coverage Δ
nipype/pipeline/engine/utils.py	82.24% <0%> (-0.23%)	⬇️
nipype/pipeline/plugins/multiproc.py	79.76% <0%> (-2.39%)	⬇️
nipype/utils/profiler.py	43.1% <0%> (-1.15%)	⬇️

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[effigies]

@satra Would appreciate your review of this. I think it's straightforward, but you might spot an edge case I've missed.

[tclose]

Thanks Chris, this change fixes the problem.

[effigies]

Great! Glad to hear it. We should have a release out that includes this fix on Tuesday.

[tclose]

Perfect!