code layout clean up test/unit/repository_subversion_test.rb

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@11716 e93f8b46-1217-0410-a6f0-8f06a7374b81
add unit tests of subversion url validation

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@11717 e93f8b46-1217-0410-a6f0-8f06a7374b81