Fix MIME type in expected results of schema1->schema2 conversion
Fix MIME type in expected results of schema1->schema2 conversion

The tests have been ignoring this value, so fix it just for general
consistency.

Signed-off-by: Miloslav Trmač <9c008e38982a5397deb855345fb164f0558459ae@redhat.com>

containers/image,containers/image