Changes log level for posted intent to Info

Posted intent are very imprortant logs which can help understand
the flow of update communication between controller and agent.
Therefore, changing it to level info so that we can easily navigate
important logs.

pkg/agent/agent.go

@@ -482,6 +482,6 @@ func (k *k8sPoster) Post(i *intent.Intent) error {
 	if err != nil {
 		return err
 	}
-	log.Debugf("posted intent")
+	log.Info("posted intent")
 	return nil
 }

pkg/controller/manager_kubernetes.go

@@ -74,6 +74,6 @@ func (k *k8sPoster) Post(i *intent.Intent) error {
 	k.log.WithFields(logrus.Fields{
 		"node":   nodeName,
 		"intent": i.DisplayString(),
-	}).Debugf("posted intent")
+	}).Info("posted intent")
 	return nil
 }