[fixup] Workaround PEP 625 - also for networkcache

Fixup "[wkrd] Workaround package index after PEP 625"

Fixup "[wkrd] Fix dist's project_name"

See branch rebase/networkcache-dist-project-name, specifically consolidated commit https://lab.nexedi.com/xavier_thompson/slapos.buildout/-/commit/8140cf541d30e4ae1781130bcad133209bdb6793