Enable converter from network to local

[matt-ramotar]

    it looks like we can have a version of the converter that has:

fromNetworkToSOT
fromSOTToCommon
fromCommonToSOT

This would skip the need to make a converter going from network to common. Raises the question of whether that should be default as well. Why make someone pass a converter from network to common when they can give you a converter from network right to SOT

Originally posted by @digitalbuddha in #499 (comment)