updates to voltha build job

Change-Id: Iebeded24e30d7323ca7a15d77bf8aef0243ca737
diff --git a/Jenkinsfile-voltha-build b/Jenkinsfile-voltha-build
index 6bb08f1..05cedb5 100644
--- a/Jenkinsfile-voltha-build
+++ b/Jenkinsfile-voltha-build
@@ -17,9 +17,9 @@
         try {
             stage ("Parse deployment configuration file") {
                 sh returnStdout: true, script: "rm -rf helm-repo-tools ${configBaseDir} 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 -b ${branch} ${cordRepoUrl}/voltha-system-tests"
+                sh returnStdout: true, script: "git clone -b master ${cordRepoUrl}/helm-repo-tools"
+                sh returnStdout: true, script: "git clone -b master ${cordRepoUrl}/${configBaseDir}"
+                sh returnStdout: true, script: "git clone -b master ${cordRepoUrl}/voltha-system-tests"
                 deployment_config = readYaml file: "${configBaseDir}/${configDeploymentDir}/${configFileName}.yaml"
             }
             stage('Clean up') {