This is not a DN? Is it the value of the ou attribute? There is no javadocs here. Please do not add interface methods without javadocs.
+ void setTagOuSuffix( String tagOuSuffix );
Without Javadocs to help understand I think these names are not very intuitive especially since suffix is usually used to mean the base DN of a partition attached to the DIT: the namingContext. Perhaps setRevisionsContainerValue() and setTagContainerValue() or setRevisionsContainerName() and setTagContainerName() might be best. Don't know but it's better than using suffix.
Providing a DN may be an issue because then your container has to allow the presence of the rdn value. Might give too much freedom where you want to constrain.