Add Solaris class in preparation for newer versions of Chef
user
```ruby

class Chef
  class Provider
    class User
      class Solaris < Chef::Provider::User::Useradd
        def create
          super
          manage_password
          unlock_user
        end

        private

          def check_lock
            lock_check = Mixlib::ShellOut.new("passwd -s #{@new_resource.username}")
            lock_check.run_command

            if lock_check.exitstatus != 0
              raise Chef::Exceptions::User, "Cannot determine if #{@new_resource} is locked!"
            end

            username, status = lock_check.stdout.split(' ')

            status == "LK"
          end

          def lock_user
            unless check_lock
              run_command(:command => "passwd -l #{@new_resource.username}")
            end
          end

          def unlock_user
            if check_lock
              run_command(:command => "passwd -u #{@new_resource.username}")
            end
          end
      end
    end
  end
end
```
assistant