Align big5 ppl queries to dsl

[noCharger]

Description

Align source ppl query to big5 dsl used for benchmark

DSL https://github.com/opensearch-project/opensearch-benchmark-workloads/blob/main/big5/operations/default.json
PPL https://github.com/opensearch-project/opensearch-benchmark-workloads/blob/main/big5/operations/ppl.json

Testing

• New functionality includes testing

[Describe how this change was tested]

Backport to Branches:

• 6
• 7
• 1
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• 3

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[LantaoJin]

Does any repo maintainer know why the DSLs in default.json and https://github.com/opensearch-project/opensearch-benchmark-workloads/tree/main/big5/queries folder are different?
For example:
"lt": "2023-01-01T03:00:00" in https://github.com/opensearch-project/opensearch-benchmark-workloads/blob/2fbd2c7a96a3844bf41c12799e28bc539739d609/big5/queries/multi_terms-keyword.json#L7C9-L7C36,
but "lt": "2023-01-05T05:00:00" in https://github.com/opensearch-project/opensearch-benchmark-workloads/blob/2fbd2c7a96a3844bf41c12799e28bc539739d609/big5/operations/default.json#L736C15-L736C42

[rishabh6788]

I don't know the historical reason for adding queries folder, the actual operation is picked from operations/default.json file.
Do the changes made to PPL operations provide apples-to-apples comparison to DSL?