On move-tracking-2 branch: update some tests to newer infrastructure.
On move-tracking-2 branch: update some tests to newer infrastructure.

* subversion/tests/cmdline/svnmover_tests.py
  (move_to_related_branch, move_to_unrelated_branch,
   move_branch_within_same_parent): Convert to test_svnmover2.


git-svn-id: 486ec3464084f62cfe8608152673c827b947faa2@1687556 13f79535-47bb-0310-9956-ffa450edef68

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