HPCC-12250 Allow pluggable interface to workunit creation

Minor changes following review.

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>
HPCC-0000 WIP

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>
HPCC-0000 WIP

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>
HPCC-0000 WIP

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>
HPCC-0000 WIP Cassandra wu

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>
HPCC-12250 Allow pluggable interface to workunit creation

Work on cleaning up the secure workunit interface

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>
HPCC-12250 Allow pluggable interface to workunit creation

A bit more cleanup of the secure workunit factory.

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>