Update upgrade documentation for 1.0.8.4

contrib/docs/UPGRADE

@@ -188,6 +188,40 @@ fusiondirectory-setup --check-deprecated will output an ldif file on the console
 
 !! Please read it carefully before applying !!
 
+Migrate FusionDirectory from 1.0.8.3 to 1.0.8.4
+===============================================
+
+- Upgrade FusionDirectory first
+
+Upgrade FusionDirectory core package before other ones to avoid dependencies errors:
+
+- Check for deprecated attributes and objectClasses in your LDAP
+
+FusionDirectory 1.0.8.1 comes with two new options in fusiondirectory-setup
+
+fusiondirectory-setup --list-deprecated
+
+List deprecated attributes and objectclasses
+Deprecated attributes:
+ gosaUnitTag                    (Takes a list of relevant mime-type|priority settings)          - 1.3.6.1.4.1.10098.1.1.12.33
+ gosaSnapshotType               (Takes either undo or snapshot)                                 - 1.3.6.1.4.1.10098.1.1.12.36
+ fdHonourUnitTags               (FusionDirectory - Honour unit tags)                            - 1.3.6.1.4.1.38414.8.14.3
+Deprecated objectClasses:
+ gosaAdministrativeUnitTag      (Marker for objects below administrational units (v2.6.1))      - 1.3.6.1.4.1.10098.1.2.1.19.16
+ gosaAdministrativeUnit         (Marker for administrational units (v2.6.1))                    - 1.3.6.1.4.1.10098.1.2.1.19.15
+
+fusiondirectory-setup --list-deprecated show deprecated attributes and objectClasses for FusionDirectory
+
+fusiondirectory-setup --check-deprecated
+
+List LDAP entries using deprecated attributes or objectclasses
+There are no entries in the LDAP using obsolete attributes
+There are no entries in the LDAP using obsolete classes
+
+fusiondirectory-setup --check-deprecated will output an ldif file on the console that you can use with ldapmodify to clean you ldap server from old attributes and objectClass
+
+!! Please read it carefully before applying !!
+
 ---
 * Further information