Test getting products that are only made at end transitions during begin transitions and during event.

Changed the interface to modules to allow querying about which data products it consumes for all transition types.

In the future, the Principal will need to know if it is at an end Run or end LuminosityBlock transition so we prefetch items that are only made at the end transition on the end transition.

Prefetching will be used for non-Event transitions so we need to be certain to only send signals from the ActivityRegistry meant for the Event during Event processing.

Requesting a data product without using a process name can result in different results based on if the request happens before the end transition. The reason is if the module in the job only puts its data into the Principal at an end transition but the source contains a related data product from a previous process. Requesting before the end transition would return the previous process data product, while waiting to request at end will return the newly created data product.
To accommodate prefetching of data products from Run and LuminosityBlocks, we need to reset the cached lookup information at end transition to allow the newly requested item to be obtained.

Use new async version for global begin Run and Luminosity transitions.

Extended the concurrent running of modules on global begin transitions to SubProcesses.
Child SubProcesses are also run concurrently.