Submission from: (NULL) (126.96.36.199)
Sometimes it's useful to restrict an existing attribute type declared
multi-valued to a single value with slapo-constraint to avoid modifying the
Unfortunately when using uid in the RDN one cannot rename the entry anymore even
when deleteoldrdn is set to true.
slapo-constraint should handle this case exactly like SINGLE-VALUE RDN
attributes are handled.