These tests never worked - they weren't run before
d5aaeb4c.

Note that these tests would fail because of this library
ordering dictionary keys (which is legal). So changing the
input files (or modifying stored cbor/msgpack/ubjson files)
would make the tests work and they could get removed from
"exclude_packaged".

Also move parsing of files in these unit tests to within
the inner sections, so that they're only parsed
number_of_files * number_of_sections instead of
number_of_files * number_of_files * number_of_sections
(so, instead of close to 100k parses about 700).