config: Simplify ks_meta_data::new_keyspace()
config: Simplify ks_meta_data::new_keyspace()

The constructor has a default argument for user types metadata so use
it.

Signed-off-by: Pekka Enberg <add4fcd06328a394f0ad91feda7ee057316dc5ed@cloudius-systems.com>

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