add sub_node_interface field to array node

[pvditt]

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• I updated the documentation accordingly.
• All new and existing tests passed.
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[codecov]

Codecov Report

Attention: Patch coverage is 0% with 5 lines in your changes missing coverage. Please review.

Project coverage is 37.04%. Comparing base (172e816) to head (39122f5).

Files with missing lines	Patch %	Lines
flyteidl/gen/pb-go/flyteidl/core/workflow.pb.go	0.00%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6018      +/-   ##
==========================================
- Coverage   37.04%   37.04%   -0.01%     
==========================================
  Files        1316     1316              
  Lines      132262   132267       +5     
==========================================
- Hits        48998    48997       -1     
- Misses      79002    79008       +6     
  Partials     4262     4262              

Flag	Coverage Δ
unittests-datacatalog	51.58% <ø> (ø)
unittests-flyteadmin	54.10% <ø> (ø)
unittests-flytecopilot	22.23% <ø> (ø)
unittests-flytectl	62.46% <ø> (ø)
unittests-flyteidl	7.23% <0.00%> (-0.01%)	⬇️
unittests-flyteplugins	53.73% <ø> (ø)
unittests-flytepropeller	42.63% <ø> (ø)
unittests-flytestdlib	57.57% <ø> (-0.02%)	⬇️

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[eapolinario]

Can we move this out of draft mode, @pvditt ?

[pvditt]

@eapolinario yup - was waiting on some consensus on some backward compatibility concerns.

[eapolinario]

@pvditt , can you merge master to get rid of the test docs CI failure?