Feature/update aws sdk go

[iliantodorov]

Big update to use aws sdk go v2:

• all requests to service now require a context, old functions without context are kept for backwards compatibility
• libraries are split up into multiple packages
• when calling the cmn-dynamo-get-items lambda, the dynamo object is converted back to the old format that lambda expects

[j4cuza]

Are we happy this has been test with all the DPS functions it will affect? @iliantodorov @sluipmoord

[iliantodorov]

Are we happy this has been test with all the DPS functions it will affect? @iliantodorov @sluipmoord

DPS should be using a specific old version, if it installs this one a lot of stuff would break