p2p(ticdc): add keep alive configuration for p2p server (#8908)

[ti-chi-bot]

This is an automated cherry-pick of #8908

What problem does this PR solve?

Issue Number: close #8907

What is changed and how it works?

if a ticdc server is hang (kill -19), the owner can not send a heartbeat message to the processor, which will cause the changefeed has a 2hours LAG(the default grpc keep alive time)
this pr adds keep alive configuration for p2p server

Check List

Tests

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

Questions

Will it cause performance regression or break compatibility?

Do you need to update user documentation, design documentation or monitoring documentation?

Release note

`None`.

[ti-chi-bot]

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[sdojjy]

/merge

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: 3AceShowHand, sdojjy

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2023-06-15 13:46:10.908711307 +0000 UTC m=+266167.323315386: ☑️ agreed by sdojjy.
• 2023-06-15 16:07:28.830447429 +0000 UTC m=+274645.245051515: ☑️ agreed by 3AceShowHand.

[sdojjy]

/retest-required

[sdojjy]

/retest-required

[GMHDBJD]

/retest