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

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