Test Runner with Coverage need escape the --omit regex in case of Test Replay Failed

[albilu]

Description When Replaying failing unittest will be nice to enable Coverage Aggregate also: https://github.com/albilu/netbeansPython/blob/master/src/main/java/org/netbeans/modules/python/testrunner/PythonUnitTestRunner.java#L212 Right now it is commented because the issue with escaping: https://github.com/albilu/netbeansPython/blob/master/src/main/java/org/netbeans/modules/python/testrunner/PythonUnitTestRunner.java#L115