Marking as invalid for keystone, here's the related response from samuel: "As discussed with Brant Knudson on IRC channel, Keystone already has support for password validation by using LDAP as a backend and configuring the LDAP server to validate passwords."
Marking as invalid for keystone, here's the related response from samuel: "As discussed with Brant Knudson on IRC channel, Keystone already has support for password validation by using LDAP as a backend and configuring the LDAP server to validate passwords."