selftests/net: packetdrill: more xfail changes (and a correction)

Recent change to add more cases to XFAIL has a broken regex,
the matching needs a real regex not a glob pattern.

While at it add the cases Willem pointed out during review.

Fixes: 3030e3d ("selftests/net: packetdrill: make tcp buf limited timing tests benign")
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20250121143423.215261-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

tools/testing/selftests/net/packetdrill/ksft_runner.sh

@@ -39,11 +39,13 @@ if [[ -n "${KSFT_MACHINE_SLOW}" ]]; then
 	# xfail tests that are known flaky with dbg config, not fixable.
 	# still run them for coverage (and expect 100% pass without dbg).
 	declare -ar xfail_list=(
+		"tcp_eor_no-coalesce-retrans.pkt"
 		"tcp_fast_recovery_prr-ss.*.pkt"
+		"tcp_slow_start_slow-start-after-win-update.pkt"
 		"tcp_timestamping.*.pkt"
 		"tcp_user_timeout_user-timeout-probe.pkt"
 		"tcp_zerocopy_epoll_.*.pkt"
-		"tcp_tcp_info_tcp-info-*-limited.pkt"
+		"tcp_tcp_info_tcp-info-.*-limited.pkt"
 	)
 	readonly xfail_regex="^($(printf '%s|' "${xfail_list[@]}"))$"
 	[[ "$script" =~ ${xfail_regex} ]] && failfunc=ktap_test_xfail