Following up on r1554027, try to make the ruby tests happy.

I have absolutely no idea how I should check the whole error chain in ruby.
The tests should perform some svn_error_find_cause() like call instead of
checking the exact outer error.

* subversion/bindings/swig/ruby/test/test_client.rb
* subversion/bindings/swig/ruby/test/test_fs.rb
  Update expected results


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1554063 13f79535-47bb-0310-9956-ffa450edef68