Fix dynamic groups evaluation from user page

1. add dynamic groups like the following :

   dn: cn=aletter,ou=group,dc=nuxeo,dc=com
   memberURL: ldap:///ou=people,dc=nuxeo,dc=com??sub?(givenName=a*)
   cn: aletter
   description: Groupe des utilisateurs dont le prenom commence par a
   objectClass: groupOfUrls
   objectClass: top
   

2. add a user contained in this group :

   dn: uid=adulogis,ou=people,dc=nuxeo,dc=com
   uid: adulogis
   cn: adulogis
   givenName: Alfred
   sn: Dulogis
   objectClass: inetOrgPerson
   objectClass: top
   userPassword: password
   

3. setup nuxeo HF26+ to connect the ldap server
4. check the group and see the user in it
5. check the user, the group does not appear

The issue is in LDAPReference:

if (getFilterMatcher().match(targetAttributes, ldapUrl.getFilter())) {

In this case ldapUrl.getFilter() would evaluate to (givenName=a*) but the optimizations introduced in HF23+ don't return all the attributes then it never matches and the groups don't get displayed.