update to build file

Change-Id: I56fd7c1a5a82282aea48264053aed3adfe1a47fa
diff --git a/Jenkinsfile-voltha-build b/Jenkinsfile-voltha-build
index 0cddb80..45dc634 100644
--- a/Jenkinsfile-voltha-build
+++ b/Jenkinsfile-voltha-build
@@ -16,7 +16,7 @@
     timeout (100) {
         try {
             stage ("Parse deployment configuration file") {
-                sh returnStdout: true, script: "rm -rf helm-repo-tools ${configBaseDir} kind-voltha"
+                sh returnStdout: true, script: "rm -rf helm-repo-tools ${configBaseDir} kind-voltha voltha-system-tests"
                 sh returnStdout: true, script: "git clone -b ${branch} ${cordRepoUrl}/helm-repo-tools"
                 sh returnStdout: true, script: "git clone -b ${branch} ${cordRepoUrl}/${configBaseDir}"
                 sh returnStdout: true, script: "git clone https://github.com/ciena/kind-voltha.git"