tests: simple_schema: Add fragment factories
tests: simple_schema: Add fragment factories

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