merge tables: properly generate column family config
merge tables: properly generate column family config

We are currently generating an empty config, which is wrong and won't
propagate important characteristics of the keyspace.

Signed-off-by: Glauber Costa <f8b79557d19b40666ebe336545a0b6178af65685@cloudius-systems.com>

wildinto/scylla,scylladb/scylla,bowlofstew/scylla,respu/scylla,duarten/scylla,kangkot/scylla,scylladb/scylla,avikivity/scylla,duarten/scylla,bowlofstew/scylla,victorbriz/scylla,stamhe/scylla,glommer/scylla,raphaelsc/scylla,senseb/scylla,guiquanz/scylla,gwicke/scylla,bowlofstew/scylla,rluta/scylla,linearregression/scylla,duarten/scylla,avikivity/scylla,stamhe/scylla,eklitzke/scylla,senseb/scylla,glommer/scylla,rentongzhang/scylla,capturePointer/scylla,tempbottle/scylla,respu/scylla,eklitzke/scylla,aruanruan/scylla,scylladb/scylla,justintung/scylla,phonkee/scylla,raphaelsc/scylla,raphaelsc/scylla,linearregression/scylla,rluta/scylla,justintung/scylla,shaunstanislaus/scylla,wildinto/scylla,senseb/scylla,capturePointer/scylla,kangkot/scylla,scylladb/scylla,tempbottle/scylla,asias/scylla,gwicke/scylla,victorbriz/scylla,aruanruan/scylla,eklitzke/scylla,asias/scylla,acbellini/scylla,respu/scylla,rentongzhang/scylla,avikivity/scylla,wildinto/scylla,rluta/scylla,kjniemi/scylla,dwdm/scylla,kjniemi/scylla,dwdm/scylla,phonkee/scylla,victorbriz/scylla,kjniemi/scylla,justintung/scylla,linearregression/scylla,shaunstanislaus/scylla,tempbottle/scylla,phonkee/scylla,rentongzhang/scylla,dwdm/scylla,capturePointer/scylla,stamhe/scylla,kangkot/scylla,gwicke/scylla,glommer/scylla,shaunstanislaus/scylla,aruanruan/scylla,acbellini/scylla,guiquanz/scylla,guiquanz/scylla,acbellini/scylla,asias/scylla