fix None cni for OpenContrail deploy

Change-Id: Idabad2bc7f394219f6a91a66c5acae14e4cccfd9
diff --git a/kubernetes/files/kubelet/default.pool b/kubernetes/files/kubelet/default.pool
index 7e2ce2f..a4ddf31 100644
--- a/kubernetes/files/kubelet/default.pool
+++ b/kubernetes/files/kubelet/default.pool
@@ -26,8 +26,10 @@
 {%- else %}
 --node-labels=node-role.kubernetes.io/node=true \
 {%- endif %}
+{%- if pool.network.opencontrail is not defined or ( pool.network.opencontrail is defined and  pool.network.opencontrail.enabled == True ) %}
 --network-plugin=cni \
 --cni-bin-dir={{ pool.apiserver.get('cni_bin_dir', '/opt/cni/bin') }} \
+{%- endif %}
 --file-check-frequency={{ pool.kubelet.frequency }} \
 {%- if common.get('cloudprovider', {}).get('enabled') %}
 --cloud-provider={{ common.cloudprovider.provider }} \