use ResyncPeriod func in case of multi controllers list simultaneously

[xrmzju]

like kube-controller-manger do

[DirectXMan12]

We generally recommend not touching resync period (because it often doesn't do what you think it does), and using ResyncAfter or something else if you really need periodic behavior

[DirectXMan12]

(closing for now, feel free to keep commenting)

[xrmzju]

@DirectXMan12 Sorry, I may not express myself clearly. my point is the default behaviour of controller-runtime for now is all reflectors will do resync action simutaneourly, which means multiple controllers may all hammer the apiserver with list requestes.

[DirectXMan12]

Ok, so to summarize -- this is about adding jitter to the resync interval?

[DirectXMan12]

I think that seems reasonable