pipeline syntax errors

Change-Id: I14e5d2c2d79ca3469b7b40af4c1d64e9111eb665
diff --git a/jjb/pipeline/voltha-atest-provisioning.groovy b/jjb/pipeline/voltha-atest-provisioning.groovy
index ad5095a..5a17015 100755
--- a/jjb/pipeline/voltha-atest-provisioning.groovy
+++ b/jjb/pipeline/voltha-atest-provisioning.groovy
@@ -67,10 +67,10 @@
 
     stage ('Start Voltha Test Suite') {
       steps {
-        sh '''
+        sh """
         cd $WORKSPACE/cord/incubator/voltha/tests/atests/common/
         ./run_robot.sh jenkinstest ${params.adapter} || true
-        '''
+        """
       }
     }