thrift: Skip materialized views
thrift: Skip materialized views

This patch ensures we don't provide access to materialized views over
thrift. This includes preventing updates but also omitting them when
describing a keyspace.

Signed-off-by: Duarte Nunes <a60e8b7496f7715d71354fe4c06dd24017025bf1@scylladb.com>

scylladb/scylla,duarten/scylla,scylladb/scylla,avikivity/scylla,raphaelsc/scylla,avikivity/scylla,duarten/scylla,avikivity/scylla,duarten/scylla,scylladb/scylla,raphaelsc/scylla,raphaelsc/scylla,scylladb/scylla