syncer: fix the case-sensitive issue (#1738)

[ti-chi-bot]

This is an automated cherry-pick of #1738

What problem does this PR solve?

Fix the bug that case-sensitive can not take effect as expected.

What is changed and how it works?

• Check upstream lower_case_table_names setting at bootstrap, do not allow set case-sensitive = true when lower_case_table_names = true
• return schema/table name base on lower_case_table_names, return Name.O for 0, and Name.L for 1/2.
• Try fix all the persistent data at syncer start if lower_case_table_names = 0

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

Code changes

• Has persistent data change

Side effects

• Breaking backward compatibility
• If the cluster is upgrade for a lower version with some upstream lower_case_table_names = 0, we can't rollback to the origin version since some persistent data has been changed.

Related changes

• Need to cherry-pick to the release branch
• Need to be included in the release note

[glorv]

/run-all-tests

[lance6716]

merge conflict in tests/others_integration.txt

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• glorv
• lance6716

To complete the pull request process, please ask the reviewers in the list to review by filling /cc @reviewer in the comment.
After your PR has acquired the required number of LGTMs, you can assign this pull request to the committer in the list by filling /assign @committer in the comment to help you merge this pull request.

The full list of commands accepted by this bot can be found here.

Reviewer can indicate their review by submitting an approval review.
Reviewer can cancel approval by submitting a request changes review.

[glorv]

/merge

[ti-chi-bot]

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

Commit hash: 632e524

[ti-chi-bot]

@ti-chi-bot: Your PR was out of date, I have automatically updated it for you.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the ti-community-infra/tichi repository.

[ti-chi-bot]

@ti-chi-bot: Your PR was out of date, I have automatically updated it for you.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the ti-community-infra/tichi repository.