See: https://bugzilla.altlinux.org/45364

No public repositories for e2k.

Not much use, and spoils postinstall.d messages with
FAILED (to mount the already-mounted flash drive).

These have been:
- taken from x86_64 server iso (in substituted form);
- checked against m-p-d where needed;
- renamed from centaurus-* to centaurus/*;
- updated with s/samba-server/samba/;
- archdep bits adjusted for m-p-d/m-p syntax difference;
- amended with some tester feedback based additions included;
- pruned regarding p9/branch packages availability.