swig-pl: Add a specific rev and peg-rev to the parse_externals_description3() test.

* subversion/bindings/swig/perl/native/t/9wc.t:
  (external_desc): Adjust the second external to have a rev and peg-rev.
  (parse_externals_description3): Adjust tests for the second external to handle
    looking for the rev and peg-rev.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1446753 13f79535-47bb-0310-9956-ffa450edef68