Add GetOption in client get call

[l1b0k]

Add GetOption so client can work with metav1.GetOptions

[FillZpp]

Discussion from slack:

Why do you need ResourceVersion="0" for your get operation? It returns object with ANY resourceVersion according to the doc https://kubernetes.io/docs/reference/using-api/api-concepts/#semantics-for-get-and-list

resourceVersion="0" return a cached result , optimize performance at large scale. resourceVersion="" always get latest result.

That would be a difference. But mostly we use resourceVersion="0" for list to avoid reading too many objects from etcd. Do you have a large number of get operation that is really necessary to set the flag?

Sure, i have opened an issue #1915 to discuss this.
In short , i have daemonSet agent and controller , prefer to use single kubernetes client to simplify the code ,also performance is our concern.

[FillZpp]

/assign