Is your feature request related to a problem? Please describe.
[Enhancement] Add integtest.sh to unify the integTest for sql in OpenSearch

Describe the solution you'd like
In order to resolve the issues in ODFE where all plugins integTest saved in one yml,
we propose new OpenSearch solutions where every plugin repo host abstraction layer of integtest.sh
so that all plugins integTest can be run in the same ways with the same commands.

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
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