Following up on r1553101 and r1553105 revert a test expectation change of
r1478220 of the literal error when using libsvn_ra_svn.

* subversion/tests/cmdline/authz_tests.py
  (authz_log_and_tracing_test): Allow old and new error messages.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1553113 13f79535-47bb-0310-9956-ffa450edef68