Fix kmesh daemon graceful exit

[hzxuzhonghu]

What type of PR is this?

/kind bug

What this PR does / why we need it:

Which issue(s) this PR fixes:
Fixes #646

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

[codecov]

Codecov Report

Attention: Patch coverage is 20.00000% with 4 lines in your changes missing coverage. Please review.

Project coverage is 49.01%. Comparing base (4f55115) to head (68d7f31).
Report is 1 commits behind head on main.

Files	Coverage Δ
pkg/status/status_server.go	33.18% <0.00%> (ø)
pkg/bpf/bpf_restart.go	65.11% <25.00%> (ø)

... and 1 file with indirect coverage changes

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[nlgwcy]

/lgtm
/approve

[kmesh-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: nlgwcy

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• OWNERS [nlgwcy]

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[kmesh-bot]

In response to a cherrypick label: #651 failed to apply on top of branch "release-0.4":

Applying: Fix kmesh daemon graceful exit
Using index info to reconstruct a base tree...
M	build/docker/start_kmesh.sh
A	pkg/bpf/bpf_restart.go
M	pkg/status/status_server.go
Falling back to patching base and 3-way merge...
Auto-merging pkg/status/status_server.go
CONFLICT (modify/delete): pkg/bpf/bpf_restart.go deleted in HEAD and modified in Fix kmesh daemon graceful exit. Version Fix kmesh daemon graceful exit of pkg/bpf/bpf_restart.go left in tree.
Auto-merging build/docker/start_kmesh.sh
CONFLICT (content): Merge conflict in build/docker/start_kmesh.sh
error: Failed to merge in the changes.
hint: Use 'git am --show-current-patch=diff' to see the failed patch
Patch failed at 0001 Fix kmesh daemon graceful exit
When you have resolved this problem, run "git am --continue".
If you prefer to skip this patch, run "git am --skip" instead.
To restore the original branch and stop patching, run "git am --abort".

[kmesh-bot]

In response to a cherrypick label: new issue created for failed cherrypick: #654