* Fix *another* packaging error (more missing testcase data!).
LP #2098833
* Fix packaging error which prevents running tests from the
released sdist.
* Disuse the metadata of the installed 'pkginfo' package for
testing:
* during creation of the various 'tox' environments,
different versions of 'setuptools' will overwrite that file
with different metadata (version, 'Dynamic' headers, etc).
OBS-URL: https://build.opensuse.org/package/show/devel:languages:python/python-pkginfo?expand=0&rev=30
