Fix path and name of vtn repo (should be 'vtn-service')

Change-Id: I2039a3757e3af457be6a278762453a3ecbcabae4
diff --git a/jjb/pipeline/helm-api-test.groovy b/jjb/pipeline/helm-api-test.groovy
index 43d0363..559a27d 100644
--- a/jjb/pipeline/helm-api-test.groovy
+++ b/jjb/pipeline/helm-api-test.groovy
@@ -147,7 +147,7 @@
         sh '''
            pushd cord/helm-charts
            helm dep up xos-core
-           helm install -f examples/image-tag-candidate.yaml -f imagePullPolicy-IfNotPresent.yaml -f examples/api-test-values.yaml xos-core -n xos-core
+           helm install -f examples/image-tag-candidate.yaml -f examples/imagePullPolicy-IfNotPresent.yaml -f examples/api-test-values.yaml xos-core -n xos-core
            sleep 60
            helm status xos-core
            popd