Add a test case for 'svnfsfs stats'.
Add a test case for 'svnfsfs stats'.

* subversion/tests/cmdline/svnfsfs_tests.py
  (): Extend test strategy doc.
  (test_stats): The new test.
  (test_list): Register the new test.

git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1698319 13f79535-47bb-0310-9956-ffa450edef68

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