IKASAN-2009 Fix test to throw runtime exception rather than checked.

ikasaneip/cli/shell/jar/src/test/java/org/ikasan/cli/shell/operation/DefaultOperationImplTest.java

@@ -174,7 +174,7 @@ void successful_start_with_failed_persistence() throws IOException
                 will(returnValue(null));
 
                 exactly(1).of(persistenceService).persist(with(any(String.class)), with(any(String.class)), with(any(Process.class)));
-                will(throwException(new Exception("failed to persist")));
+                will(throwException(new RuntimeException("failed to persist")));
             }
         });