Moved the configmap data to values.yaml to make it configurable

Change-Id: Idfef9a959cb29a67a64a0d42a177be8a8c06a74b
diff --git a/xos-core/templates/db-configmap.yaml b/xos-core/templates/db-configmap.yaml
index ef0fa9b..5c7f616 100644
--- a/xos-core/templates/db-configmap.yaml
+++ b/xos-core/templates/db-configmap.yaml
@@ -19,4 +19,4 @@
   labels:
     {{- include "xos-core.release_labels" . | indent 4 }}
 data:
-  service_5432_name: 'xos-db'
+  service_5432_name: {{ .Values.configs.db_config }}