Update test1-cloud.jenkinsfile

jenkinsfile/test1-cloud.jenkinsfile

@@ -15,9 +15,9 @@ pipeline {
             
         stage("Clean Workspace"){
             steps{
-                sh("ls -al ${env.WORKSPACE}")
-                deleteDir()
-                sh("ls -al ${env.WORKSPACE}")
+                sh label: '', script: '''ls $WORKSPACE
+                rm -rf $WORKSPACE/*
+                ls $WORKSPACE'''
             }
             
         }