old_contents: __author__ = 'msenin'
  
new_contents: def test_galera_cluster_status(local_salt_client):
      gs = local_salt_client.cmd(
          'sql-*',
          'cmd.run',
          ['salt-call mysql.status | grep -A1 wsrep_cluster_size | tail -n1'])
      
      size_cluster = []
  
      for item in  gs.values():
          size_cluster.append(item.strip())
  
      assert size_cluster == ['3','3','3'], \
             '''There found inconsistency within cloud. MySQL galera cluster
                is probably broken, the cluster size gathered from nodes:
                {}'''.format(gs)
  
subject: Update test_galera_cluster.py