fix log initialization

InitLogs unconditionally disables contextual logging, while ValidateAndApply
checks the feature gate for that. InitLogs must come first, otherwise

    --feature-gates=ContextualLogging=true

doesn't work.

cluster-autoscaler/main.go

@@ -569,12 +569,11 @@ func main() {
 	featureGate.AddFlag(pflag.CommandLine)
 	kube_flag.InitFlags()
 
+	logs.InitLogs()
 	if err := logsapi.ValidateAndApply(loggingConfig, featureGate); err != nil {
 		klog.Fatalf("Failed to validate and apply logging configuration: %v", err)
 	}
 
-	logs.InitLogs()
-
 	healthCheck := metrics.NewHealthCheck(*maxInactivityTimeFlag, *maxFailingTimeFlag)
 
 	klog.V(1).Infof("Cluster Autoscaler %s", version.ClusterAutoscalerVersion)