add HDB_CAP_F_HANDLE_ENTERPRISE_PRINCIPAL to the capability flags for the
SQLite backend, as it uses the common _hdb_fetch_kvno() helper which supports
enterprise principals.
Failure to set this flag resulted in hdb_fetch_kvno() incorrectly returning
HDB_ERR_WRONG_REALM when enterprise principals were being used, as the
enterprise name translation was instead done by _kdc_db_fetch(), thereby
squashing the enterprise name type (which otherwise would have set the
force_canonicalize option).
2730e12b6a