The behavior of the 'EntryPoint.extras` attribute that this exposes has
changed in recent versions of 'importlib_metadata'/'importlib.metadata'.
In change Iff536d4f4267efbebc4be1e7e5da8a9fde39f79b we applied a
temporary fix to preserve the legacy behavior on these newer versions,
however, given that this is actually a deprecated attribute [1], the
best long-term option seems to be not exposing things. Do just that.
[1] https://packaging.python.org/en/latest/specifications/entry-points/#data-model
Change-Id: Id772d9f002e6945666685138bdef8f8ca32b5229
Signed-off-by: Stephen Finucane <stephenfin@redhat.com>
7eca3f5661