text: -- // CLOUD-43947: change loginuser to centos in openstack credentials
  -- Migration SQL that makes the change goes here.
  
  UPDATE credential SET loginusername='centos' where dtype='OpenStackCredential';
  
  -- //@UNDO
  -- SQL to undo the change goes here.
  
  UPDATE credential SET loginusername='ec2-user' where dtype='OpenStackCredential';
  