7066: Move static properties to instance properties

[ca61688]

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Issue

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  Feature". Note that before an issue is finished, you can still make a pull request by raising a separate issue
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  • Resolves Configure Spark nodes on EKS to match EMR #7066

Tests

• My PR adds the following tests based on our test strategy OR does not need testing for this extremely good reason:
  • WremockITs
  • Ran EMRBulkImportST & EKSBulkImportST which both pased

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[ca61688]

Core change: separate EKS Spark configuration from EMR
The branch introduces dedicated Spark configuration support for bulk import on EKS, separating it from the existing EMR properties.

New/removed property classes (java/core/.../properties/instance/)
EKSProperty.java (new) - defines EKS-specific Spark properties: executor instances, driver/executor memory, memory overhead, executor cores, and default parallelism. All with EKS-appropriate defaults (e.g. 12 g memory, tuned for Fargate).
BulkImportProperty.java (new) - extracts properties shared between EMR and EKS modes: BULK_IMPORT_CLASS_NAME, speculation settings, shuffle codec, executor Java options, etc. Previously these lived in EMRProperty.
EMRProperty.java (deleted) - properties split between BulkImportProperty (shared) and the remaining EMR-specific classes.

StateMachinePlatformExecutor.java
Simplified - Spark config construction moved into ConfigurationUtils, reducing duplication.