Update cns yaml (#743)

* update cns tag in yaml

* pipeline cleanup

* Use int64 for NC version in NNC status

* bump cns version to 1.2.0

Co-authored-by: Matthew Long <[email protected]>
Co-authored-by: Matthew Long <[email protected]>

Author: thatmattlong

cns/azure-cns.yaml

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