SEBA-274 adding helm chart test for demosimpleexample service

Change-Id: Iff188dcd6e0b9209d74b8b833ca1b61215622f39
diff --git a/xos-profiles/demo-simpleexampleservice/values.yaml b/xos-profiles/demo-simpleexampleservice/values.yaml
index bc25efa..1927b51 100644
--- a/xos-profiles/demo-simpleexampleservice/values.yaml
+++ b/xos-profiles/demo-simpleexampleservice/values.yaml
@@ -26,6 +26,8 @@
 
 tosca_loaderImage: "xosproject/tosca-loader:1.0.1"
 
+xos_api_testerImage: 'xosproject/xos-api-tester:master'
+
 xosAdminUser: "admin@opencord.org"
 xosAdminPassword: "letmein"