added usability operator helm chart to README.md

Author: marinakog

integration-tests/README.md

@@ -63,7 +63,21 @@ Basic Use Cases described above are verified in all the domain configurations. A
 | 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 |
-				
+
+| Operator Usability | Use Case |
+| --- | --- |
+| Operator Helm Chart with Invalid Attributes | create chart with invalid attributes, verify that deployment fails with expected error |
+| Two Operators using same Operator Namespace | create two operators sharing same namespace,verify that deployment fails with expected error |
+| Operator Helm Chart using default target domains Namespace| create chart using default target domains namespace |
+| Operator Helm Chart using empty target domains Namespace| create chart using empty target domains namespace |
+| Operator Helm Chart using UpperCase target domains Namespace| create chart using invalid UpperCase target domains namespace, verify that deployment fails with expected error |
+| Operator Helm Chart using not preexisted Operator Namespace | create chart using not preexisted Operator namespace, verify that deployment will fail |
+| Operator Helm Chart using not preexisted Operator ServiceAccount | create chart using not preexisted Operator ServiceAccount, verify that deployment will fail, but will change to running after SA is created |
+| Operator Helm Chart create delete create | create delete create chart with same values |
+| Two Operators using same External Https Port | create chart using same https rest port as already running first operator, verify that deployment fails with expected error |
+| Two Operators using same target domains namespace | create chart using target domains namespace as already running first operator, verify that deployment fails with expected error |
+| Operator Helm Chart using not preexisted target domains namespace | create chart using not preexisted target domains namespace as already running first operator, verify that deployment fails with expected error |
+
 
 
 # Directory Configuration and Structure