Qt Metrics v2.3.2: Include xpass as a failed test result

The xpass is considered a fail in the test system. Include xpass result
as a failure from the XML test result files in Autotest dashboard.

Change-Id: I5a7fa7681aa1f4dfd5bc1ddfb21c06f2dc58b37b
Reviewed-by: Tony Sarajärvi <tony.sarajarvi@digia.com>