Disable running insignificant tests on Qt5 Integration jobs

It will save some time if we skip insignificant test cases.
Those won't be blocking anyway and statuses can still be found
from submodule jobs.

Change-Id: I021ca0b005ae06330448749cbd77df3c2cb28942
Reviewed-by: Tony Sarajärvi <tony.sarajarvi@digia.com>
Reviewed-by: Sergio Ahumada <sahumada@blackberry.com>