fix port, typo, IP, and updated MME image

Change-Id: Idf1fdbcaf1181a2507deae8674dd0a24707adc61
diff --git a/mcord/mcord-bbu/values.yaml b/mcord/mcord-bbu/values.yaml
index d7afd75..d3dfff4 100644
--- a/mcord/mcord-bbu/values.yaml
+++ b/mcord/mcord-bbu/values.yaml
@@ -29,6 +29,7 @@
     bbu: "10.90.0.131:30500/accelleran/vran-l3-fdd:onf-dns"
   ports:
     s1ap: 36412
+    s1ap_external: 30412
   replicas: 1
   nats_service_name: "nats-cluster"
   inst_id: "enb_key"