[fix] When the Nat-gw pod container restarts unexpectedly, trigger nat-gw statefulset restart to restore the nat-gw pod configuration

[kldancer]

[fix] When the Nat-gw pod container restarts unexpectedly, trigger nat-gw statefulset restart to restore the nat-gw pod configuration

Pull Request

• [ * ] Make sure you have followed Kube-OVN Code Style.

What type of this PR

Examples of user facing changes:

• Bug fixes

Which issue(s) this PR fixes

Fixes #(4987)
#4987

[coveralls]

Pull Request Test Coverage Report for Build 13781376770

Details

• 0 of 29 (0.0%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.01%) to 22.018%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
pkg/controller/pod.go	0	12	0.0%
pkg/controller/vpc_nat_gateway.go	0	17	0.0%

Totals
Change from base Build 13781199166:	-0.01%
Covered Lines:	10263
Relevant Lines:	46611

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💛 - Coveralls