Add support for DynamoDB Global Table V2 (2019.11.21)

[gcalv0]

Is your feature request related to a problem?
Yes, actually ACK creates version 2017 (2017.11.29) which requires to create an empty table in the destination before adding global tables for a region. Also there are several restrictions/changes regarding the legacy version.

This request is related with the following closed issue:
#1034

Describe the solution you'd like
Use the actual version as a default to avoid braking changes and offer the possibility to specify the version in the ACK manifest.
https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/V2globaltables_upgrade.html