Hudson Does not Check uniqueMember within LDAP Groups

Currently Hudson only checks for attribute member in LDAP groups. However, it is
also quite common to use attribtute uniqueMember to store member list.

In WEB-INF/security/LDAPBindSecurityRealm.groovy, an one-line change that makes
Hudson search for both member=

can be done as follows:

authoritiesPopulator(DeferredCreationLdapAuthoritiesPopulator,initialDirContextFactory,"ou=groups")
{
// groupRoleAttribute = "ou";
groupSearchFilter = "(|(member=

))"
}

Thanks to Kohsuke.Kawaguchi@sun.com for the above code.