[FIX] TypeError from 'v' of ANTs version string

[0rC0]

Summary

Building ANTs from source code, actually the recommended procedure, leads to a version string with a leading v that causes the TypeError.

#Fixes #3427

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

[x] Strip the leading v in the ANTs version-string parsing function

Acknowledgment

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

[codecov]

Codecov Report

Merging #3430 (26e805b) into master (cd4c34d) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master    #3430   +/-   ##
=======================================
  Coverage   65.21%   65.21%           
=======================================
  Files         307      307           
  Lines       40478    40479    +1     
  Branches     5352     5352           
=======================================
+ Hits        26399    26400    +1     
+ Misses      13008    13004    -4     
- Partials     1071     1075    +4     

Flag	Coverage Δ
unittests	64.94% <100.00%> (-0.02%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
nipype/interfaces/ants/base.py	74.00% <100.00%> (+0.53%)	⬆️
nipype/algorithms/icc.py	57.53% <0.00%> (ø)
nipype/interfaces/fsl/utils.py	63.76% <0.00%> (ø)

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[effigies]

Thanks for this. I wanted to add some tests and ended up refactoring a bit. So this is incorporated in #3444.