Proposal: When the edge node goes offline, add pod restart and status query functions for the edge node

[luomengY]

… query functions for the edge node

What type of PR is this? /kind feature

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes https://github.com/kubeedge/kubeedge/pull/5504

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

[kubeedge-bot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[luomengY]

add it to v1.17. @Shelley-BaoYue

[luomengY]

PTAL @Shelley-BaoYue @WillardHu

[WillardHu]

/lgtm

[kubeedge-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: fisherxu

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