Add retries for PredictionITTests

[rithin-pullela-aws]

Description

Created a new junit test rule for retries, the PredictionITTests are flaky and the retry logic resolves the issue

The reason for creating the retry rule is to simulate all the before and after methods related to a test case

Related Issues

Resolves #3550

Check List

• New functionality includes testing.
• New functionality has been documented.
• API changes companion pull request created.
• Commits are signed per the DCO using --signoff.
• Public documentation issue/PR created.

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[zane-neo]

The new file is missing license header:

Files with unapproved licenses:
> Task :opensearch-ml-plugin:licenseHeaders FAILED

  /__w/ml-commons/ml-commons/plugin/src/test/java/org/opensearch/ml/utils/RetryRule.java

@rithin-pullela-aws please take a look.

[rithin-pullela-aws]

The new file is missing license header:

Files with unapproved licenses:
> Task :opensearch-ml-plugin:licenseHeaders FAILED

  /__w/ml-commons/ml-commons/plugin/src/test/java/org/opensearch/ml/utils/RetryRule.java

@rithin-pullela-aws please take a look.

Thank you @zane-neo, will have a look

[rithin-pullela-aws]

Closing this PR since retry is a workaround and the root cause has been found. Will raise another PR resolving the issue