ebs br: check status of global nodes before doing data recovery

[BornChanger]

What problem does this PR solve?

Close #5242

What is changed and how does it work?

For TiDB cluster deployed across K8S, there could be more than one TC Clusters. EBS data restore should start until all TiKV Nodes and PD nodes are ready.

Code changes

• Has Go code change
• Has CI related scripts change

Tests

• Unit test
• E2E test
• Manual test
• 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]

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[BornChanger]

The Tik