Remove test of $LastChangedBy$ from the export keyword translation test to avoid failures when no authentication is present.
Remove test of $LastChangedBy$ from the export keyword translation test to
avoid failures when no authentication is present.

* subversion/tests/clients/cmdline/export_tests.py
  (export_keyword_translation): Removed the test of $LastChangedBy$ keyword.
  (test_list): Stop skipping export_keyword_translation.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion