Ticket #47423 - 7-bit check plugin does not work for userpassword attribute
Bug description: 7-bit check plugin fails to validate userpassword
attribute
Fix description: This patch corrects the validation code for userpassword
attribute. It fetches the unhashed userpassword from the extension
instead of the entry attribute value
https://fedorahosted.org/389/ticket/47423
Reviewed by nhosoi.