Made xcodebuild output parser more lenient

The goal is to parse output like this:

```
[DEBUG] Test Suite 'All tests' started at 2013-02-09 22:47:49 +0000
Test Suite '/Users/vg/.jenkins/jobs/ios-calendar/workspace/build/Debug-iphonesimulator/CalendarTests.octest(Tests)' started at 2013-02-09 22:47:49 +0000

[DEBUG] Test Suite 'CalendarCellViewSpec' started at 2013-02-09 22:47:49 +0000
```

which is needed when running Application Tests (i.e. with test host) using scripts like this https://github.com/sgleadow/xcodetest/blob/master/scripts/RunUnitTests.rb