RUBY-1242 Update tests to use root authorized client with listDatabases
RUBY-1242 Update tests to use root authorized client with listDatabases

saghm/mongo-ruby-driver,mongodb/mongo-ruby-driver,mongodb/mongo-ruby-driver,jonhyman/mongo-ruby-driver,mongodb/mongo-ruby-driver,jonhyman/mongo-ruby-driver,saghm/mongo-ruby-driver