70117f5 Ticket 50236 - memberOf should be more robust

Authored and Committed by mreynolds 5 years ago
    Ticket 50236 - memberOf should be more robust
    
    Bug Description:  When doing a modrdn, or any memberOf update, if the entry
                      already has the memberOf attribute with the same value
                      the operation is incorrectly rejected.
    
    Fix Description:  If we get an error 20 (type or value exists) return success.
    
                      Also fixed a coding mistake that causes the wrong error
                      code to be returned.  This also required fixing the CI
                      test to check for the new correct errro code.
    
    https://pagure.io/389-ds-base/issue/50236
    
    Reviewed by:  firstyear, spichugi, and tbordaz (Thanks!!!)