Jenkins Input to deploy to prod

Jenkinsfile

pipeline {
    agent {
        label 'aws'
    }
    tools {
        maven 'Maven35'
        jdk 'jdk-1.8.0-aws'
    }
    stages {
        stage('Build') {
            steps {
                checkout scm
                // build site steps
            }
        }
        stage('Deploy Development') {
            when { not { branch 'master' } }
            steps {
                // deployment steps
            }
        }
        stage('Deploy Production') {
            when { branch 'master' }
            parallel {
                stage('Release') {
                    input {
                        message "Permission to deploy to production server?"
                    }
                    steps {
                        // deployment steps
                    }
                }
            }
        }
    }
    post {
        always { 
          // use a Shared Pipeline Library function
          sendNotifications currentBuild.currentResult 
        }
    }
}