Relealse 3.1.5

[shiyuhang0]

What problem does this PR solve?

What is changed and how it works?

Check List

Tests

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

Code changes

• Has exported function/method change
• Has exported variable/fields change
• Has interface methods change
• Has persistent data change

Side effects

• Possible performance regression
• Increased code complexity
• Breaking backward compatibility

Related changes

• Need to cherry-pick to the release branch
• Need to update the documentation
• Need to update the tidb-ansible repository
• Need to be included in the release note

[shiyuhang0]

/run-all-tests

[ti-chi-bot[bot]]

@zhangyangyu: adding LGTM is restricted to approvers and reviewers in OWNERS files.

In response to [this](https://github.com/pingcap/tispark/pull/2749#pullrequestreview-1566714527): > Instructions for interacting with me using PR comments are available [here](https://git.k8s.io/community/contributors/guide/pull-requests.md). If you have questions or suggestions related to my behavior, please file an issue against the [kubernetes/test-infra](https://github.com/kubernetes/test-infra/issues/new?title=Prow%20issue:) repository.

[ti-chi-bot[bot]]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: zhangyangyu

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

Needs approval from an approver in each of these files: - **[OWNERS](https://github.com/pingcap/tispark/blob/release-3.1/OWNERS)** Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[shiyuhang0]

/run-all-tests

[shiyuhang0]

/run-all-tests tidb=v6.5.0 tikv=v6.5.0 pd=v6.5.0

[shiyuhang0]

/run-all-tests tidb=v6.1.0 tikv=v6.1.0 pd=v6.1.0

[shiyuhang0]

/run-all-tests