Added UI impact details to specification

tendrl-bug-id: #252
Signed-off-by: Shubhendu <shtripat@redhat.com>

Author: Shubhendu

specs/unmanage_cluster.adoc

@@ -129,8 +129,76 @@ None
 
 ==== Tendrl Dashboard impact:
 
-* UX requirements for invoking an un-manage cluster flow for an existing cluster
-is captured at https://redhat.invisionapp.com/share/8QCOEVEY9
+* Following changes required in UI dashboards based on UX designs mentioned at
+https://redhat.invisionapp.com/share/8QCOEVEY9
+
+** Add an option namely `Unmanage` under kebab menu for each successfully
+imported and managed cluster
+
+** Add a dialog box which opens up on click event of `Unmanage` option from
+kebab menu of the cluster. This dialog box is for confirmation from user to
+start un-manage flow for the cluster
+
+===== Workflow
+
+* User clicks the `Unmanage` option from the kebab menu for a managed cluster
+
+* The clikc event triggers a dialog box with appropriate message. A sample
+message is available at
+https://redhat.invisionapp.com/share/8QCOEVEY9#/screens/273239640
+
+* There are 3 possible actions on this dialog
+
+** `Close` icon to close the dialog and no action performed for un-managing the
+cluster. User would be directed back to clusters list page
+
+** `Cancel` button to close the dialog and no action performed for un-managing the
+cluster. User would be directed back to clusters list page
+
+** `Unmanage` button to start the un-manage cluster task in backend. A message
+with task details gets displayed on dialog box. Sample message available at
+https://redhat.invisionapp.com/share/8QCOEVEY9#/screens/273239844
+
+** This final message after submission of the task for un-managing cluster would
+also provide a button to view the task details. A button `View Task Progress` is
+available for the same. User can opt to close this dialog and later user context
+menus to check the task updates
+
+** Once a cluster is being moved to un-managed state, the changes in properties
+listed for cluster are as below
+
+*** `Import Status` changed to `Unmanaging`
+
+*** `Is Managed` changed to `no`
+
+*** The columns `Volume Profiling`, `Volumes` and `Alerts` would be hidden
+
+*** `View Details` link would be available to check the task details
+
+*** `Dashboard` button would be disabled
+
+*** Kebab menu for the un-managed cluster would be hidden
+
+** Once the un-manage cluster task gets complted a global notification gets
+received
+
+** If task was successful, the state of the cluster would be changed to ready to
+import
+
+If task failed due to some issues, the cluster details would listed as below in
+
+*** `Import Status` changed to `Unmanage failed`
+
+*** `Is managed` changed to `no`
+
+*** The columns `Volume Profiling`, `Volumes` and `Alerts` would be hidden
+
+*** `View Details` link would be available to check the errors
+
+*** `Dashboard` button would be disabled
+
+*** Kebab menu for the un-managed cluster would be hidden
+
 
 === Security impact:
 
@@ -167,6 +235,7 @@ None
 Primary assignee:
   shtripat
   mbukatov
+  a2batic
 
 === Work Items:
 
@@ -224,3 +293,7 @@ clearly mentioned in documents
 * https://github.com/Tendrl/commons/pull/798
 
 * https://github.com/Tendrl/monitoring-integration/pull/317
+
+* https://github.com/Tendrl/ui/issues/801
+
+* https://github.com/Tendrl/api/issues/349