fix config defaults for systemd startscripts

Change-Id: I7f38c951cc515db61a857221346bc4309f2b4740
diff --git a/contrib/etc_default/osmo-remsim-client b/contrib/etc_default/osmo-remsim-client
index b1a2187..6c977f1 100644
--- a/contrib/etc_default/osmo-remsim-client
+++ b/contrib/etc_default/osmo-remsim-client
@@ -1,4 +1,4 @@
 # Default settings for osmo-remsim-client This file is sourced by systemd
 
 # Options to pass to osmo-remsim-client
-GLOBAL_CLIENT_OPTS="-s 10.9.99.10 -V 1d50 -P 4004 -C 1"
+GLOBAL_CLIENT_OPTS="-i 10.9.99.10 -V 1d50 -P 4004 -C 1"