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目前deployment patch 会顺序拉起不同的容器，但是因为是patch操作，如果有四个容器要按照权重执行，就会滚动跟新四次，意味著deploy会重新调度四次，是个烂方法。。。。

本来设计方案想预先启动一个deployment后，对其中的pod 都做原地升级，但是这个会报错，k8s内部原地升级仅支持替换replace，不支持add操作。

I0425 21:31:11.520742 43109 resource.go:67] CreateOrUpdateDeploymentupdated
I0425 21:31:11.520769 43109 controller.go:55] do patch image to pods...
I0425 21:31:41.773783 43109 controller.go:59] 1
I0425 21:31:41.773852 43109 controller.go:60] [{example2 nginx:1.14.2 [] [] [{ 0 80 }] [] [] {map[] map[] []} [] [] nil nil nil nil nil false false false}]
I0425 21:31:41.773945 43109 resource.go:127] do patch....
[{"op":"add","path":"/spec/containers/-","value":{"name":"example2","image":"nginx:1.14.2","ports":[{"containerPort":80}],"resources":{}}}]
E0425 21:31:41.828893 43109 resource.go:162] patch error: Pod "mypoddeployer-57d89dd79-rlblw" is invalid: spec.containers: Forbidden: pod updates may not add or remove containers