cql3: Check feature in .validate
cql3: Check feature in .validate

There's no local variable to get features from in the
create_view_statement constructor, but since the .validate
is always called after it, it looks safe to check for
needed feature in it (we have storage_proxy there).

Signed-off-by: Pavel Emelyanov <c9a32589e048e044184536f7ac71ef92fe82df3e@scylladb.com>

avikivity/scylla,avikivity/scylla,scylladb/scylla,avikivity/scylla,scylladb/scylla,scylladb/scylla,scylladb/scylla