etc_default: change bankd, client ip to 127.0.0.1

Related: OS#5187
Change-Id: I8dffe950b0f041a231708521d11b027bfbd304e3
diff --git a/contrib/etc_default/osmo-remsim-client b/contrib/etc_default/osmo-remsim-client
index 6c977f1..d4f5514 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="-i 10.9.99.10 -V 1d50 -P 4004 -C 1"
+GLOBAL_CLIENT_OPTS="-i 127.0.0.1 -V 1d50 -P 4004 -C 1"