added changes

Jenkinsfile

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+pipeline {
+    agent { label 'UBUNTU_NODE1' }
+    trigger {
+        pollSCM('* * * * *') }
+    stages {
+        stage('get url')
+            steps {
+                git branch: 'sweety',
+                    url: 'https://github.com/Madhuri-chinta/spring-petclinic.git'     
+            }
+        stage('package')
+            steps {
+                sh './mvnw package'
+            }        
+    }    
+
+    }
+
+