Reconciliation must initialise before Merit runs
Reconciliation must initialise before Merit runs

SubordinateConsumers need to fetch the demand of their leader in order
to determine if this has changed. Initializing after merit has run means
the demand never appears to change since it always gets the new demand.

Ref quintel/etmodel#3605

quintel/etengine,quintel/etengine,quintel/etengine,quintel/etengine