code: def elastic_install(self):
          
          with cd('/tmp'):
              if not exists('elastic.deb'):
                  sudo('wget {0} -O elastic.deb'.format(
                      bigdata_conf.elastic_download_url
                  ))
  
              sudo('dpkg -i elastic.deb')
              sudo('apt-get install -y')
docs: elasticsearch install
          :return: