Upgrade CNI config version to 0.3.0 
Upgrade CNI config version to 0.3.0 

Was using the default version of 0.2.0, didn't load with 0.4.0. closes https://github.com/kubernetes/minikube/issues/4406
dlorenc/minikube,warmchang/minikube,warmchang/minikube,dlorenc/minikube,warmchang/minikube,warmchang/minikube,kubernetes/minikube,kubernetes/minikube,kubernetes/minikube,dalehamel/minikube,dlorenc/minikube,dalehamel/minikube,dalehamel/minikube,warmchang/minikube,kubernetes/minikube,dlorenc/minikube,kubernetes/minikube,dlorenc/minikube,dlorenc/minikube,kubernetes/minikube,dlorenc/minikube,warmchang/minikube,kubernetes/minikube,dlorenc/minikube,warmchang/minikube