Initial Open5GS support

Change-Id: Iff8b88dc22d8f156572839abb48b0c1377c55e33
diff --git a/sysmocom/defaults.conf b/sysmocom/defaults.conf
index 69d9ed9..eeb2b83 100644
--- a/sysmocom/defaults.conf
+++ b/sysmocom/defaults.conf
@@ -101,6 +101,9 @@
   enable_pcap: false
   log_all_level: warning
 
+open5gsepc:
+  db_host: "localhost"
+
 amarisoft:
   license_server_addr: 0.0.0.0