add nodeSelector support for TidbInitializer Pod

[csuzhangxc]

What problem does this PR solve?

add nodeSelector support for TidbInitializer Pod

What is changed and how does it work?

Code changes

• [ ] Has Go code change
• [ ] Has CI related scripts change

Tests

• [ ] Unit test
• [ ] E2E test
• [x] Manual test

apiVersion: pingcap.com/v1alpha1
kind: TidbInitializer
spec:
    nodeSelector:
      kubernetes.io/hostname: kind-control-plane

apiVersion: v1
kind: Pod
spec:
    nodeSelector:
      kubernetes.io/hostname: kind-control-plane

• [ ] No code

Side effects

• [ ] Breaking backward compatibility
• [ ] Other side effects:

Related changes

• [ ] Need to cherry-pick to the release branch
• [ ] Need to update the documentation

Release Notes

Please refer to Release Notes Language Style Guide before writing the release note.

[ti-chi-bot[bot]]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: Once this PR has been reviewed and has the lgtm label, please ask for approval from csuzhangxc, ensuring that each of them provides their approval before proceeding. For more information see the Code Review Process.

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/tidb-operator/blob/master/OWNERS)** Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 64.16%. Comparing base (c0b8880) to head (c2eec9a).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #5594 +/- ## ========================================== + Coverage 61.48% 64.16% +2.68% ========================================== Files 235 246 +11 Lines 30335 34229 +3894 ========================================== + Hits 18651 21963 +3312 - Misses 9814 10319 +505 - Partials 1870 1947 +77 ``` | [Flag](https://app.codecov.io/gh/pingcap/tidb-operator/pull/5594/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=pingcap) | Coverage Δ | | |---|---|---| | [e2e](https://app.codecov.io/gh/pingcap/tidb-operator/pull/5594/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=pingcap) | `33.49% <0.00%> (?)` | | | [unittest](https://app.codecov.io/gh/pingcap/tidb-operator/pull/5594/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=pingcap) | `61.46% <100.00%> (-0.03%)` | :arrow_down: |

[csuzhangxc]

/run-all-tests

[csuzhangxc]

/cherry-pick release-1.5

[ti-chi-bot]

@csuzhangxc: once the present PR merges, I will cherry-pick it on top of release-1.5 in the new PR and assign it to you.

In response to [this](https://github.com/pingcap/tidb-operator/pull/5594#issuecomment-2024532179): >/cherry-pick release-1.5 Instructions for interacting with me using PR comments are available [here](https://prow.tidb.net/command-help). If you have questions or suggestions related to my behavior, please file an issue against the [ti-community-infra/tichi](https://github.com/ti-community-infra/tichi/issues/new?title=Prow%20issue:) repository.

[csuzhangxc]

/run-pull-e2e-kind-br

[csuzhangxc]

/run-pull-e2e-kind

[ti-chi-bot]

@csuzhangxc: new pull request created to branch release-1.5: #5595.

In response to [this](https://github.com/pingcap/tidb-operator/pull/5594#issuecomment-2024532179): >/cherry-pick release-1.5 Instructions for interacting with me using PR comments are available [here](https://prow.tidb.net/command-help). If you have questions or suggestions related to my behavior, please file an issue against the [ti-community-infra/tichi](https://github.com/ti-community-infra/tichi/issues/new?title=Prow%20issue:) repository.