added usability testcase to readme.md

Author: marinakog

integration-tests/README.md

@@ -59,6 +59,7 @@ Basic Use Cases described above are verified in all the domain configurations. A
 | Domain with situational config | create domain with listen address not set for admin server and t3 channel/NAP and incorrect file for admin server log location. Introspector should override these with sit-config automatically. Also, with some junk value for t3 channel public address and using custom situational config override replace with valid public address using secret. Also, on Jenkins this domain uses NFS instead of HOSTPATH PV storage |	
 | Two domains managed by two operators | verify scaling and restart of one domain doesn't impact another domain. Delete domain resources using delete script from samples. |			
 | Domain with Recycle policy | create domain with pvReclaimPolicy="Recycle" Verify that the PV is deleted once the domain and PVC are deleted |
+| Domain with default sample values | create domain using mostly default values for inputs |
 | Domain home in image using WLST | cluster scaling |
 | Domain home in image using WDT  | cluster scaling |