fstest: switch to port forwarding now Owncloud disallows wildcards

A recent security fix in the Owncloud container now causes it to
disallow wildcards in the OWNCLOUD_TRUSTED_DOMAINS setting.

This patch works around the problem by using port forwarding from the
host so we can keep the domain name constant.

fstest/testserver/init.d/TestWebdavOwncloud

@@ -5,6 +5,7 @@ set -e
 NAME=owncloud
 USER=rclone
 PASS=HarperGrayerFewest5
+PORT=38081
 
 . $(dirname "$0")/docker.bash
 
@@ -17,15 +18,16 @@ start() {
            -e "OWNCLOUD_ADMIN_PASSWORD=$PASS" \
            -e "OWNCLOUD_MYSQL_UTF8MB4=true" \
            -e "OWNCLOUD_REDIS_ENABLED=false" \
-           -e "OWNCLOUD_TRUSTED_DOMAINS=*.*.*.*" \
+           -e "OWNCLOUD_TRUSTED_DOMAINS=127.0.0.1" \
+           -p 127.0.0.1:${PORT}:8080 \
            owncloud/server
     
     echo type=webdav
-    echo url=http://$(docker_ip):8080/remote.php/webdav/
+    echo url=http://127.0.0.1:${PORT}/remote.php/webdav/
     echo user=$USER
     echo pass=$(rclone obscure $PASS)
     echo vendor=owncloud
-    echo _connect=$(docker_ip):8080
+    echo _connect=127.0.0.1:${PORT}
 }
 
 . $(dirname "$0")/run.bash