Add "retry_count" to execution report

Change-Id: Ibbfb138c1a565a42b5a169c42e8c99b8e3f77a7c
Closes-Bug: #1814850
Depends-On: I1c937ff05c4a1f3e28010427c03e3e4f113f6fba

mistralclient/commands/v2/executions.py

@@ -389,6 +389,9 @@ class GetReport(command.Command):
             level
         )
 
+        if 'retry_count' in t_ex:
+            self.print_line('(retry count: %s)' % t_ex['retry_count'], level)
+
         if t_ex['state'] == 'ERROR':
             state_info = t_ex['state_info']