Reduce size of ParallelClusterComponent

[himani2411]

Description of changes

• Reduce size of ParallelClusterComponent as it causes below error during image build creation

Resource handler returned message: "Model validation failed (#: #: only 1 subschema matches out of 2) #/Data: expected maxLength: 16000, actual: 17100 (#/Data)" (RequestToken: <Token>, HandlerErrorCode: InvalidRequest)

Current Size is 15206
Limitation of Data is 16000 is as per https://docs.aws.amazon.com/AWSCloudFormation/latest/TemplateReference/aws-resource-imagebuilder-component.html

Tests

• Ran updated Unit Test
• Passed Manual Build image Creation with Vanilla AL2 AMI which was previously giving the above error

References

• Link to impacted open issues.
• Link to related PRs in other packages (i.e. cookbook, node).
• Link to documentation useful to understand the changes.

Checklist

• Make sure you are pointing to the right branch.
• If you're creating a patch for a branch other than develop add the branch name as prefix in the PR title (e.g. [release-3.6]).
• Check all commits' messages are clear, describing what and why vs how.
• Make sure to have added unit tests or integration tests to cover the new/modified code.
• Check if documentation is impacted by this change.

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By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.25%. Comparing base (960668b) to head (9346b8d).
Report is 37 commits behind head on release-3.13.

Additional details and impacted files

@@               Coverage Diff                @@
##           release-3.13    #6906      +/-   ##
================================================
+ Coverage         90.21%   90.25%   +0.03%     
================================================
  Files               181      181              
  Lines             16205    16209       +4     
================================================
+ Hits              14619    14629      +10     
+ Misses             1586     1580       -6     

Flag	Coverage Δ
unittests	90.25% <ø> (+0.03%)	⬆️

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