Modified JUnitTestClassExecutionResult to support the changes made in JUnitXmlResultWriter. - Overloaded `assertTestCount` with a 4 integer function that asserts the skip count. - Changed assert methods to filter on the existence(or not) of a `skipped` sub-element. - Added an assert to the checking method to check that there is a skipped annotation and that is not empty. - Removed findIgnoredTests as it is no longer required.