*: support user defined filters for baseline capture

[eurekaka]

What problem does this PR solve?

Issue Number: close #15655

Problem Summary:

New functionality for baseline capture.

What is changed and how it works?

What's Changed:

• add a new system table mysql.capture_plan_baselines_blacklist
• users can insert / update / delete rows in mysql.capture_plan_baselines_blacklist to manipulate the capture filter
• the table contains 3 columns, id, filter_type, and filter_value, currently, only table / db / frequency type values are supported, other unknown types would be ignored with a warning message in the log
• table type values should be like test.t, i.e, database name should be specified for the table name, otherwise, it would be ignored with a warning in the log
• if frequency type value is 3, then all the queries which occur less than 4 times would be ignored in the capture; if there are multiple frequency rows, the capture filter would choose the largest one
• there is no cache for the rows in mysql.capture_plan_baselines_blacklist, so no reload operation is needed once the table data is modified; the baseline capture would read the table each time

Check List

Tests

• Unit test

Side effects

N/A

Documentation

• Affects user behaviors

Release note

• Support user defined filters for baseline capture

[eurekaka]

/run-check_dev_2

[eurekaka]

/run-check_dev_2

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• Reminiscent
• winoros

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[eurekaka]

/run-check_dev_2

[eurekaka]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: cbc831a

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