Issue with Kubespray v2.14.0 (likely related to Multus configuration)

Link to issue with details: https://github.com/intel/multus-cni/issues/561

CNF Testbed (Kubespray) runs without errors, but inspecting the cluster afterwards show the following:
```
$ kubectl get all --all-namespaces
NAMESPACE NAME READY STATUS RESTARTS AGE
kube-system pod/calico-kube-controllers-b5c94f8f8-2j5fd 1/1 Running 0 43m
kube-system pod/calico-node-b4kmp 1/1 Running 0 45m
kube-system pod/calico-node-cm4x4 1/1 Running 0 45m
kube-system pod/coredns-dff8fc7d-xps6q 0/1 ContainerCreating 0 42m
kube-system pod/dns-autoscaler-6fcd794dd8-88mb4 0/1 ContainerCreating 0 42m
kube-system pod/kube-apiserver-node0 1/1 Running 0 49m
kube-system pod/kube-controller-manager-node0 1/1 Running 0 49m
kube-system pod/kube-multus-ds-amd64-b6dvr 1/1 Running 0 44m
kube-system pod/kube-multus-ds-amd64-pdpdn 1/1 Running 0 44m
kube-system pod/kube-proxy-57vbc 1/1 Running 0 49m
kube-system pod/kube-proxy-x89hc 1/1 Running 0 46m
kube-system pod/kube-scheduler-node0 1/1 Running 0 49m
kube-system pod/kubernetes-dashboard-667c4c65f8-8474b 0/1 ContainerCreating 0 42m
kube-system pod/kubernetes-metrics-scraper-54fbb4d595-df2ns 0/1 ContainerCreating 0 42m
kube-system pod/nginx-proxy-node1 1/1 Running 0 45m
kube-system pod/nodelocaldns-859qq 1/1 Running 0 42m
kube-system pod/nodelocaldns-gmhdm 1/1 Running 0 42m
```

Issue seems to be Kubespray deploying Multus with `--cni-version=0.4.0`, which should be supported, but it looks like it isn't.

**Workaround:**

With the cluster deployed, update the Multus daemonset:
```
$ kubectl edit ds kube-multus-ds-amd64 -n kube-system
```
Update the arguments to use `--cni-version=0.3.1` instead of `--cni-version=0.4.0` as shown below:
```
- args:
- --cni-conf-dir=/host/etc/cni/net.d
- --cni-bin-dir=/host/opt/cni/bin
- --multus-conf-file=auto
- --multus-kubeconfig-file-host=/etc/cni/net.d/multus.d/multus.kubeconfig
- --cni-version=0.3.1
```
Save the file and wait for the update to propagate. After that all of the above pods should end up in state "Running"