Migrate data between different table schemas with common columns

[fee-mendes]

Consider that:

Source table is:

id int PRIMARY KEY,
value int,
value2 int,
value 3 int

Target is:

id int,
value int,
value2 int,
PRIMARY KEY(id, value)

Scylla Migrator should be able to ignore the missing columns on target table (value3 in the example above) and feed it regardless, this would help a lot during table migrations.