Validate TTL if it gets moved properly

[tarzanek]

Per https://docs.scylladb.com/getting-started/time-to-live/ we might need to decrease TTL written so we don't reset it, when taken with TTL function from source DF

https://docs.scylladb.com/kb/ttl-facts/

[tarzanek]

TTL function gets current TTL for the data, so source wise this looks OK

[tarzanek]

Does it need adjusting for PK ? PK TTL should pick the biggest out of all TTLs

[tarzanek]

also does it need adjusting for default, if the default TTL varies between both tables?

[tarzanek]

validate different columns TTL (so k, a,b,c and use 3 inserts to insert a,b,c with different TTLs) and validate target also has proper TTLs (so 3 different for each column)