preserve more logs and reduce timeout for restart for debugging

.pipelines/cni/singletenancy/cniv2-template.yaml

@@ -197,7 +197,7 @@ stages:
         condition: and( and( not(canceled()), not(failed()) ), or( contains(variables.CONTROL_SCENARIO, 'restartNode') , contains(variables.CONTROL_SCENARIO, 'all') ) )
         displayName: "Restart Test"
         dependsOn: deploy_pods
-        timeoutInMinutes: 90 # Windows podsubnet takes an extended amount of time to reconcile
+        timeoutInMinutes: 20 # Windows podsubnet takes an extended amount of time to reconcile
         steps:
           - template: ../load-test-templates/restart-node-template.yaml
             parameters:

cni/log/logger.go

@@ -16,7 +16,7 @@ var (
 
 const (
 	maxLogFileSizeInMb = 5
-	maxLogFileCount    = 8
+	maxLogFileCount    = 110
 )
 
 func initZapLog(logFile string) *zap.Logger {