Added few more expected behaviors

Signed-off-by: Shubhendu <shtripat@redhat.com>

specs/expand_cluster.adoc

@@ -168,6 +168,11 @@ new node is seamless and automatic
 * Verify that there is a notification of success of new node getting imported in
 tendrl
 
+* Verify that post detection and action from tendrl, the additional nodes and
+its related entities get reflected in UI and grafana dashbaords properly
+
+* Verify this auto expansion post detection applies to multiple nodes as well
+and doesnt limit to one node at a time
 
 == Documentation impact:
 
@@ -177,3 +182,6 @@ involvement of tendrl-ansible for setting up node
 == References:
 
 * <TBD> link to tendrl-ansible issue to track the changes for this support
+
+* https://github.com/Tendrl/specifications/issues/257 to track the auto
+detection of additional node(s) in the cluster as a separate specification