Enginio archives should not end up in same place as Qt5 packages

Earlier it was agreed that Enginio packages will be built separately
from Qt5 builds and Enginio packages end up in dedicated place in
installer. Hence make sure the 7z archives ends up in correct place
on remote network disk.

Change-Id: I719f38ea5529ac1579246a42ccc87d83550fc546
Reviewed-by: Sergio Ahumada <sergio.ahumada@digia.com>