remsim-client: Differentiate the two rspro_client_fsm instances by name

They were both called "server", which can be confusing.  Now the
bankd-facing FSM has the identity of "bankd"

Change-Id: I2626f92202717880c678ce219a14872538713f4e

src/simtrace2-remsim_client.c

@@ -849,6 +849,7 @@ int main(int argc, char **argv)
 		fprintf(stderr, "Unable to create bankd conn FSM: %s\n", strerror(errno));
 		exit(1);
 	}
+	osmo_fsm_inst_update_id(bankdc->fi, "bankd");
 
 	asn_debug = 0;