Support PodTemplate in ArrayNode

[hamersaw]

Tracking issue

NA

Why are the changes needed?

Currently, ArrayNode does not support operating over tasks that use PodTemplates. This is a very powerful resource that should be enabled.

What changes were proposed in this pull request?

Updating the ArrayNode construct to use underlying function config.

How was this patch tested?

locally / cloud / etc with many workflows, for example:

@task(pod_template=PodTemplate(
    primary_container_name="primary",
    labels={"mylabel": "myvalue"},
))
def echo_2(x: int) -> int:
    time.sleep(1)
    return x

@workflow
def gen_wf_2() -> typing.List[typing.Optional[int]]:
    return map_task(echo_2)(x=list(range(5)))

Setup process

NA

Screenshots

NA

Check all the applicable boxes

• I updated the documentation accordingly.
• All new and existing tests passed.
• All commits are signed-off.

Related PRs

NA

Docs link

NA

[codecov]

Codecov Report

Attention: 3 lines in your changes are missing coverage. Please review.

Comparison is base (9bf7afa) 85.76% compared to head (282ceef) 85.75%.
Report is 1 commits behind head on master.

Files	Patch %	Lines
flytekit/core/array_node_map_task.py	57.14%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2088      +/-   ##
==========================================
- Coverage   85.76%   85.75%   -0.01%     
==========================================
  Files         313      313              
  Lines       23426    23433       +7     
  Branches     3510     3511       +1     
==========================================
+ Hits        20092    20096       +4     
- Misses       2727     2730       +3     
  Partials      607      607              

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