testing: Serve images in testresults via mod_rewrite and not a symlink

testing/hosts/winnetou/etc/apache2/sites-available/000-default.conf

@@ -6,6 +6,9 @@
                 Options Indexes FollowSymLinks MultiViews
         </Directory>
 
+        RewriteEngine on
+        RewriteRule "^/testresults/.+/images/(.*)" "/images/$1" [PT]
+
         LogLevel warn
         ErrorLog ${APACHE_LOG_DIR}/error.log
         CustomLog ${APACHE_LOG_DIR}/access.log combined