fix: Set CALICO_MANAGE_CNI for Calico w/ Flannel (#637)

Signed-off-by: Devon Crouse <[email protected]>

Author: devoncrouse

modules/extensions/resources/calico/calico-node-env-flannel.yaml

@@ -8,5 +8,7 @@ spec:
           value: "${POD_CIDR}"
         - name: "CALICO_IPV4POOL_VXLAN"
           value: "${IPV4POOL_VXLAN}"
+        - name: "CALICO_MANAGE_CNI"
+          value: "true"
         - name: "FELIX_IPTABLESBACKEND"
           value: "${IPTABLES_BACKEND}"