[ISSUE #432] add redress running connectors status

[Slideee]

What is the purpose of the change

#432

Brief changelog

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Verifying this change

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[odbozhou]

Can you describe what problem this PR solves?

[Slideee]

Can you describe what problem this PR solves?

#422

测试的时候发现Connector似乎也有这个问题，当发生负载均衡时，一个Running的Connector状态也会UNASSIGNED，因此想要纠正它的正确状态。