Revision 1831501

Improved: Convert Requirement related services from simple to entity-auto
(OFBIZ-10395)

I was wrong to removes "useless" default optional="true" for auto-attributes.
What misleaded me is that optional="true" is the default for override attribute 
but it's the contrary for auto-attributes (which makes sense)

Also I used override instead of attribute to add the custRequestId and
custRequestItemSeqId fields :/