Serializer produces configuration files that are not up to date

The Serializer class is used by ConfigurationConverter to update an old configuration file to a new one. Unfortunately this doesn't always convert configuration files to the newest elements. For example storeAsBinary, eviction and some others are no updated. Also we have a test named ConfigurationSerializerTest that doesn't seem to have different handling for different versions so there is no telling what is incorrect in the generation.