tst_qvariant: add a test QVariant works with not movable types

tst_qvariant: add a test QVariant works with not movable types

Soon, QVariant will use more internal storage. It is important
that it still work with not movable types

Also, check with type that are movable but cannot be copyed
without their copy constructor to be called such as QSharedDataPointer

Change-Id: I6d67755476e4822468599bebfa8774ad96a15306
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@nokia.com>