fix(fill_db_data.py): correct the support version of enterprise
fix(fill_db_data.py): correct the support version of enterprise

Currently we assume the two features are supported by all enterprise,
actually they aren't support in 2021.1 unstable, two tests will fail the
upgrade jobs.

The two commits only exist in enterprise branch (2021.2.dev), but
not branch-2021.1

- https://github.com/scylladb/scylla/commit/2342b386f467770b93238239332ccf45c9c33021
  Fix for #7443, adjusted SI result order
- https://github.com/scylladb/scylla/commit/4bb11076525df443d155e45331c82a3f34e2e649
  Add support of null query

Signed-off-by: Amos Kong <eb01d8f828a6c9a20be4534e72e049aaf41503df@scylladb.com>

scylladb/scylla-cluster-tests,scylladb/scylla-longevity-tests,scylladb/scylla-longevity-tests,scylladb/scylla-cluster-tests,scylladb/scylla-longevity-tests,scylladb/scylla-cluster-tests,scylladb/scylla-cluster-tests,scylladb/scylla-cluster-tests