Fix breakage of the test suite after adding http proxy support.
Fix breakage of the test suite after adding http proxy support.

* subversion/tests/cmdline/svntest/main.py
  (_create_parser): Add --http-proxy argument support.



git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1410196 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion