test_gem_server.rb: Don't specify port number
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51100 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
test_gem_server.rb: Don't specify port number
dynamically chosen port numberss to get rid of conflicts.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51100 b2dd03c8-39d4-4d8f-98ff-823fe69b080e