QtQA: Mark scripts as insignificant in Ubuntu 12.04

These have always been failing in Ubuntu 12.04. Marking as
insignificant to be able to make the stage blocking.

Task-number: QTQAINFRA-708
Change-Id: I0625365fd92e1211bb4fd0cef5a4e49efa770c13
Reviewed-by: Sergio Ahumada <sergio.ahumada@digia.com>

qtqa.pro

@@ -10,6 +10,8 @@ tests.subdir = tests
 tests.CONFIG = no_default_install
 !contains(QT_BUILD_PARTS,tests):tests.CONFIG += no_default_target
 
+linux-*:system(". /etc/lsb-release && [ $DISTRIB_CODENAME = precise ]"):CONFIG+=insignificant_test # QTQAINFRA-708
+
 SUBDIRS +=  \
     scripts \
     tests