cql3: Add missing include to schema_altering_statement.hh
cql3: Add missing include to schema_altering_statement.hh

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

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