Do not try list containers if default path is provided

[cyberduck]

268795c created the issue

When connecting to OpenStack Swift (Keystone) Cyberduck tries to make 'GET /v1/AUTH_X?limit=100 HTTP/1.1' and 'HEAD /v1/AUTH_X HTTP/1.1' even parameter 'path' provided in bookmark. This should be shanged to make request to URL+'path', but not to /.

For example, i created an additional user and gave him read access (by ACL) to container 'my_cont'. Then i try connect with newly created user and set 'path' parameter to '/my_cont/'. But than i getting 403 error, cause Cyberduck tries to GET and HEAD '/'. Openstack swift doesn't support account ACL, so i can't give access to read container list to users.

[cyberduck]

@dkocher commented

In 18290.