selftest: packetdrill: Import opt34/reset-* tests.

selftest: packetdrill: Import opt34/reset-* tests.

This imports the non-experimental version of opt34/reset-*.pkt.

                                   |  Child  |              RST              | sk_err  |
  ---------------------------------+---------+-------------------------------+---------+
  reset-after-accept.pkt           |   TFO   |   after accept(), SYN_RECV    |  read() |
  reset-close-with-unread-data.pkt |   TFO   |   after accept(), SYN_RECV    | write() |
  reset-before-accept.pkt          |   TFO   |  before accept(), SYN_RECV    |  read() |
  reset-non-tfo-socket.pkt         | non-TFO |  before accept(), ESTABLISHED | write() |

The first 3 files test scenarios where a SYN_RECV socket receives RST
before/after accept() and data in SYN must be read() without error,
but the following read() or fist write() will return ECONNRESET.

The last test is similar but with non-TFO socket.

Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20250927213022.1850048-10-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>