update cns tag in yaml (#719)

* update cns tag in yaml

* pipeline cleanup

Co-authored-by: Matthew Long <Matthew.Long@microsoft.com>
Co-authored-by: Matthew Long <matlong@microsoft.com>

.pipelines/e2e-step-template.yaml

@@ -85,7 +85,7 @@ steps:
       export CLIENT_SECRET=$(AKS_ENGINE_CLIENT_SECRET) 
       export TENANT_ID=$(AKS_ENGINE_TENANT_ID) 
       export SUBSCRIPTION_ID=$(AKS_ENGINE_SUBSCRIPTION_ID) 
-      export CLEANUP_ON_EXIT=false
+      export CLEANUP_ON_EXIT=true
       export CLEANUP_IF_FAIL=false
       export REGIONS=$(AKS_ENGINE_REGION) 
       export IS_JENKINS=false 

cns/azure-cns.yaml

@@ -93,7 +93,7 @@ spec:
           effect: NoSchedule
       containers:
         - name: cns-container
-          image: mcr.microsoft.com/containernetworking/azure-cns:v1.1.9-alpha
+          image: mcr.microsoft.com/containernetworking/azure-cns:v1.2.0-alpha
           imagePullPolicy: IfNotPresent
           args: [ "-c", "tcp://$(CNSIpAddress):$(CNSPort)", "-t", "$(CNSLogTarget)"]
           volumeMounts: