Add calico as alternative CNI

kustomize/calico-coreos.yaml

@@ -0,0 +1,16 @@
+kind: DaemonSet
+apiVersion: apps/v1
+metadata:
+  name: calico-node
+  namespace: kube-system
+  labels:
+    k8s-app: calico-node
+spec:
+  template:
+    spec:
+      volumes:
+        # Used to install Flex Volume Driver
+        - name: flexvol-driver-host
+          hostPath:
+            type: DirectoryOrCreate
+            path: /var/lib/kubelet/volumeplugins/nodeagent~uds/uds