*: add auto sync configuration in creating etcd client (#1240)

[ti-chi-bot]

This is an automated cherry-pick of #1240

What problem does this PR solve?

Issue Number: close #1236

What is changed and how it works?

Add AutoSyncInterval configuration in creating etcd client.

Check List

Tests

• None

Code changes

• None

Side effects

• None

Related changes

• None

Release note

fix the problem that drainer/pump can't work when pd's topology changes

[lichunzhu]

/merge

[ti-chi-bot]

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[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: lance6716, lichunzhu

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Needs approval from an approver in each of these files:

• OWNERS [lance6716,lichunzhu]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2023-06-06 08:40:00.062831123 +0000 UTC m=+337586.335803905: ☑️ agreed by lichunzhu.
• 2023-06-06 08:50:26.305905923 +0000 UTC m=+338212.578878702: ☑️ agreed by lance6716.

[ti-chi-bot]

only for test

[wuhuizuo]

only for test

wrongly closing...