cql3: Fix create_table_statement::raw_statement definition lookup
cql3: Fix create_table_statement::raw_statement definition lookup

The column_identifiers are wrapped in shared_ptr<> so use the
appropriate hash and comparison functions for the container.

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

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