postgres's data directory moved to /var/lib/mesh/postgres. On ace and novox that
directory was there, root:root 0700, before the directory resource was applied, so
the engine used it as found (issue 339's rule) and left it to root: the postgres
provider, running as the operator's account, cannot reach its own secrets,
consumers and grants there.
/var/lib/mesh is the engine's tree (root, 0755): only the engine's account makes a
directory in it. A directory below it owned by that account is now the mesh's and
is given its declared owner and mode. Anywhere else, or owned by another account,
issue 339's rule stands.