Setting shared services as optional requirements

Change-Id: I49e7b12707bef85b8f2530490114e97e3078a620
diff --git a/xos-profiles/seba-services/values.yaml b/xos-profiles/seba-services/values.yaml
index 365a796..ec65381 100644
--- a/xos-profiles/seba-services/values.yaml
+++ b/xos-profiles/seba-services/values.yaml
@@ -57,3 +57,9 @@
 
 onosRestService: "onos-ui.default.svc.cluster.local"
 kafkaService: "cord-kafka.default.svc.cluster.local:9092"
+
+# whether to install or not this shared services
+fabric:
+  enabled: true
+onos-service:
+  enabled: true
\ No newline at end of file