FIX: Move TraitType import, handle API change for NoDefaultSpecified

[effigies]

Summary

Addresses #3157 in maint/1.3.x.

List of changes proposed in this PR (pull-request)

Acknowledgment

• (Mandatory) I acknowledge that this contribution will be available under the Apache 2 license.

[codecov]

Codecov Report

Merging #3158 into maint/1.3.x will increase coverage by 0.91%.
The diff coverage is 100%.

@@               Coverage Diff               @@
##           maint/1.3.x    #3158      +/-   ##
===============================================
+ Coverage        67.25%   68.17%   +0.91%     
===============================================
  Files              296      297       +1     
  Lines            39804    39825      +21     
  Branches          5208     5218      +10     
===============================================
+ Hits             26772    27149     +377     
+ Misses           12316    11966     -350     
+ Partials           716      710       -6

Flag	Coverage Δ
#smoketests	51.76% <100%> (+1.1%)	⬆️
#unittests	65.41% <100%> (+0.87%)	⬆️

Impacted Files	Coverage Δ
nipype/interfaces/base/traits_extension.py	95.87% <100%> (+0.06%)	⬆️
nipype/testing/__init__.py	88.88% <0%> (ø)
nipype/interfaces/base/core.py	87.11% <0%> (+0.19%)	⬆️
nipype/interfaces/spm/preprocess.py	57.03% <0%> (+0.32%)	⬆️
nipype/pipeline/engine/workflows.py	76.93% <0%> (+0.33%)	⬆️
nipype/utils/subprocess.py	94.02% <0%> (+0.74%)	⬆️
nipype/interfaces/freesurfer/preprocess.py	66.11% <0%> (+0.98%)	⬆️
nipype/interfaces/fsl/base.py	86.66% <0%> (+1.11%)	⬆️
nipype/interfaces/freesurfer/model.py	64.25% <0%> (+1.12%)	⬆️
nipype/utils/filemanip.py	78.9% <0%> (+1.12%)	⬆️
... and 15 more

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