Add session property to set input table matching threshold

[feilong-liu]

Description

Add session property to set the threshold for input table stats matching in HBO

Motivation and Context

In HBO, when we get statistics from history runs, we are to compare the input table statistics in history runs with the input table statistics in current runs. If the difference is larger than a threshold, HBO estimates will not be used.

However, in debug, I found that it's hard to debug and tune this threshold. Currently it's set in config and needs to restart the coordinator to make changes. This PR is to add a session property for it, it's mainly for debugging/tuning purpose and hidden from user.

Impact

Make HBO debug and tune easier.

Test Plan

Existing unit tests

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Release Notes

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== RELEASE NOTES ==

General Changes
* Add a session property `history_input_table_statistics_matching_threshold` to set the threshold for input statistics match in HBO.