Add support of multiple CNIs

Change-Id: Ib2fba96acfd63830bbc6ba4bdce0112ca492df1f
diff --git a/tests/pillar/common_storageclass.sls b/tests/pillar/common_storageclass.sls
index fbe6562..613cc13 100644
--- a/tests/pillar/common_storageclass.sls
+++ b/tests/pillar/common_storageclass.sls
@@ -15,7 +15,8 @@
       kube-system:
         enabled: true
     network:
-      engine: calico
+      cnis:
+      - calico
       calico:
         calicoctl_image: calico/ctl
         cni_image: calico/cni
@@ -41,8 +42,6 @@
     registry:
         host: tcpcloud
   common:
-    network:
-      engine: none
     addons:
       storageclass:
         nfs_elastic_1: