Update Jenkinsfile

Author: Zhao Xiaojie

Jenkinsfile

@@ -7,5 +7,16 @@ pipeline {
         echo 'sdf'
       }
     }
+    
+    stage('two'){
+      when {
+  allOf {
+    branch 'master'
+  }
+}
+      steps{
+        echo 'sf'
+      }
+    }
   }
 }