s4-upgradeprovision: split update_present in two functions depending on the method...

s4-upgradeprovision: split update_present in two functions depending on the method used

In order to make the function a bit more clearer and with less depth,
the selection of attribute that are not updated is split in two
functions depending on the fact that we are using mainly
replPropertyMetadata to make our choice or if we are using the list of
attributes that should, could or shouldn't be updated/created/deleted.