Align plan handling inletsctl with inlets-operator

[dirien]

Comment from the PR of #109

That's why I missed this. I'll merge this, but would you like to work on the proposed behaviour change? That's how the operator works ATM:

https://github.com/inlets/inlets-operator/blob/master/controller.go#L553-L569

So this issue is to align the plan handling of inletsctl with inlets-operator

[dirien]

done

[alexellis]

Thank you