[FEATURE] Dynamically adjust rate limit for OpenSearch requests

[ykmr1224]

Is your feature request related to a problem?
When creating/updating index into OpenSearch, it could cause throttling due to too much request.
Although rate limit is implemented (#567), as it uses Spark parameter, we cannot adjust the limit once the streaming job is started.

What solution would you like?
We want to come up with a way to dynamically adjust rate limit so that user can modify late limit even after they started a job.

What alternatives have you considered?
Alter the index to manual refresh, and change back to auto refresh, which would start new streaming job, and can pick up new rate limit config.

Do you have any additional context?
n/a

[dblock]

[Catch All Triage - 1, 2, 3, 4, 5]

[ykmr1224]

Replaced with #640