supported the surefire property of ignoring test errors.

This is useful to let Hudson mark test failures as unstable.

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@16579 71c3de6d-444a-0410-be80-ed276b4c234a

core/src/build-script/Cobertura.groovy

@@ -75,7 +75,7 @@ public class Cobertura {
     }
 
     def makeBuildFailIfTestFail() {
-        if(ant.project.getProperty("failed")!=null)
+        if(ant.project.getProperty("failed")!=null && !Boolean.getBoolean("testFailureIgnore"))
             throw new Exception("Some unit tests failed");
     }
 }