HPCC-9190 Roxie should not reconnect to dali if restarts while lockDali

If Roxie has been manually disconnected frmo dali, it needs to stay that way
if if it restarts after a core.

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>
Merge pull request #4297 from richardkchapman/roxie-lockdali

HPCC-9190 Roxie should not reconnect to dali if restarts while lockDali

Reviewed-by: Gavin Halliday <ghalliday@hpccsystems.com>