Update server config content

Also keep upper case variable names reserved for env variables and let the server create the control fifo itself.

utils/mp-server/new_campaignd

@@ -10,8 +10,8 @@ set -o nounset
 run=""
 
 [ "$1" = "-n" ] && { run=echo; shift; }
-VERSION="$1"
-PORT="$2"
+version="$1"
+port="$2"
 
 prefix="$HOME/campaignd"
 
@@ -19,7 +19,7 @@ if [ ! -d "$prefix" ]; then
 	die "FATAL: campaignd prefix \`$prefix\` missing!"
 fi
 
-instance="$prefix/$VERSION"
+instance="$prefix/$version"
 control_fifo="$instance/socket"
 server_cfg="$instance/server.cfg"
 
@@ -32,23 +32,21 @@ fi
 $run mkdir "$instance"
 $run mkdir "$instance/data"
 $run mkdir "$instance/logs"
-$run mknod "$control_fifo" p
 
 $run ln -sf "../COPYING.txt" "$instance/COPYING.txt"
-$run ln -sf "$instance/current.log" "$HOME/$VERSION.log"
+$run ln -sf "$instance/current.log" "$HOME/$version.log"
 
 # Create the initial configuration for a server in read-only mode.
 $run cat > "$server_cfg" <<EOF
 compress_level=9
 control_socket="$control_fifo"
-port=$PORT
+port=$port
 stats_exempt_ips="192.168.*,127.0.0.1"
 read_only=yes
 [server_info]
 	feedback_url_format="https://r.wesnoth.org/t\$topic_id"
+	id=$version
 [/server_info]
-[campaigns]
-[/campaigns]
 EOF
 
 set +x
@@ -56,7 +54,7 @@ set +x
 if [ "$run" != "echo" ]; then
 	echo '************************************************************************'
 	echo "Instance created. To disable read-only mode for officially opening it "
-	echo "up to users, run \`send_campaignd_command $VERSION readonly no\` after "
+	echo "up to users, run \`send_campaignd_command $version readonly no\` after "
 	echo "starting it for the first time."
 	echo '************************************************************************'
 fi