upd mtls service pattern

Author: ikethecoder

microservices/gatewayApi/patterns/sdx/service_mtls_r1.py

@@ -28,6 +28,13 @@
           upstream_cert_s_dn_header: "X-CERT-S-DN"
           upstream_cert_serial_header: "X-CERT-SERIAL"
 
+      - name: mtls-acl
+        tags: [ns.${gateway}.${ns_qualifier}]
+        enabled: true
+        config:
+          certificate_header_name: X-CERT-S-DN
+          allow: [ ${mtls_allow_list} ]
+
       - name: rate-limiting
         tags: [ns.${gateway}.${ns_qualifier}]
         enabled: true