fix(fifa17-tls): carry the advertised IP in the roster/redirector cert SAN

The FUT hub failed to load with "An error occurred downloading the FUT Squad
Update" because the client dials the roster (https://<advertise>:8081) and the
redirector BY IP, while the served certificate carried DNS SANs only
(winter15.gosredirector.ea.com + wildcards). The client aborts that handshake with
fatal certificate_unknown. Root cause and evidence in
docs/FIFA17_FUT_SQUAD_UPDATE_TLS.md (commit 082246c): a wire capture shows the client
offering TLS1.2 with RSA suites, the server selecting them, then rejecting the cert —
and autopatch demonstrably patched both ProtoSSL gates in that process, so this
validation path is NOT one of the two the client-side patch covers. The SAN is the fix.

Three generators produced the cert and none put the advertised IP in the SAN:

* docker entrypoint.sh — the production path. The advertised IP is a RUNTIME value
  (OPENFUT_ADVERTISE), unknown at image-build time, so the cert is now reconciled at
  startup: reissued with IP:$ADV,IP:127.0.0.1 in the SAN only when the current cert
  lacks it. That makes a restart reuse the same cert (no per-start fingerprint churn,
  which would otherwise recreate the Aug-13 surprise) and self-heal if $ADV changes.
* Dockerfile — installs openssl unconditionally so the entrypoint can reissue at
  runtime (previously it was dropped with the apt lists), and bakes a loopback-IP
  baseline cert so a plain `docker build` still yields a usable image.
* openfut-fut.sh — the local orchestrator. ensure_cert now defaults the SAN IP to this
  host's primary LAN IP (OPENFUT_ADVERTISE overrides) and reissues when the cert lacks
  it, instead of only generating when the file is absent.

Verified without the client, which is the strongest evidence obtainable here: a
verifying TLS client checking the cert BY IP rejects the old DNS-only cert ("IP address
mismatch, certificate is not valid for '10.10.0.120'") and accepts the new
IP-bearing cert; and the entrypoint reconcile is idempotent end to end — an old cert is
reissued to carry IP:$ADV, a simulated restart leaves the fingerprint unchanged, and
the final SAN carries both the advertised and loopback IPs.

Live confirmation needs the production container rebuilt with OPENFUT_ADVERTISE set
(operator-gated); production is otherwise untouched.

entrypoint.sh carries unrelated pre-existing uncommitted work (env-based component
selection) that is not on any branch; only the cert-reconcile block is committed here,
and that work is left intact in the working tree.

fifa17-recon/docker/fifa17-python/entrypoint.sh

@@ -28,6 +28,26 @@ export POW_CONTENT_ADDR="${POW_CONTENT_ADDR:-$BIND:8080}"
 
 echo "[openfut] bind=$BIND advertise=$ADV"
 
+# The TLS cert every responder serves must carry the ADVERTISED IP in its SAN.
+# The client dials the roster (:8081) and redirector by that IP, and that path
+# validates the cert's SAN against the dialed address — it is NOT covered by the
+# two client-side ProtoSSL gates autopatch patches, so a cert lacking IP:$ADV is
+# rejected with fatal certificate_unknown and the FUT hub fails with "An error
+# occurred downloading the FUT Squad Update" (docs/FIFA17_FUT_SQUAD_UPDATE_TLS.md).
+# The advertised IP is unknown at image-build time, so reconcile it here: reissue
+# only when the current cert does not already carry it, so a restart reuses the
+# same cert (no per-start fingerprint churn) and this self-heals if $ADV changes.
+CERT=redir_cert.pem KEY=redir_key.pem
+if ! openssl x509 -in "$CERT" -noout -ext subjectAltName 2>/dev/null | grep -qF "IP Address:$ADV"; then
+    echo "[openfut] reissuing TLS cert with SAN IP:$ADV (was missing it)"
+    openssl req -x509 -newkey rsa:2048 -nodes -keyout "$KEY" -out "$CERT" -days 3650 \
+        -subj "/CN=winter15.gosredirector.ea.com" \
+        -addext "subjectAltName=DNS:winter15.gosredirector.ea.com,DNS:*.gosredirector.ea.com,DNS:*.ea.com,IP:$ADV,IP:127.0.0.1" \
+        >/dev/null 2>&1 \
+        && echo "[openfut] cert SAN now: $(openssl x509 -in "$CERT" -noout -ext subjectAltName 2>/dev/null | tail -1 | tr -s ' ')" \
+        || { echo "[openfut] FATAL: could not reissue TLS cert" >&2; exit 1; }
+fi
+
 # name   script                  extra-env
 declare -a SERVERS=(
   "lsx|lsx_responder_v2.py|OPENFUT_LSX_EVENT_COUNT=100000"