Avoid removing test base folder.
Avoid removing test base folder.

The base folder might contain additional content that the user does not
expect to be deleted.  We should only remove files/folders that we
create in the tests.

sitofabi/duplicati,duplicati/duplicati,sitofabi/duplicati,mnaiman/duplicati,mnaiman/duplicati,sitofabi/duplicati,sitofabi/duplicati,mnaiman/duplicati,duplicati/duplicati,mnaiman/duplicati,sitofabi/duplicati,duplicati/duplicati,mnaiman/duplicati,duplicati/duplicati,duplicati/duplicati