Because ToReport queues need to construct RetrieveJob objects which are
not associated with a mount

Brings RQs in line with AQs

No inheritance, instead have partial or full specialization based on two
template parameters.

This commit passes compilation but not linking (yet) as several
methods are still commented out.

Conflicts:
	objectstore/Algorithms.hpp
	objectstore/AlgorithmsTest.cpp
	objectstore/ArchiveQueueAlgorithms.cpp
	objectstore/ArchiveQueueAlgorithms.hpp
	objectstore/ArchiveRequest.cpp
	objectstore/CMakeLists.txt
	objectstore/GarbageCollector.cpp
	objectstore/RetrieveQueueAlgorithms.hpp
	objectstore/RetrieveRequest.hpp
	scheduler/OStoreDB/OStoreDB.cpp

This prevented the passing of exceptions as output.
Also integrated the promise in the reporter class.

This allows better internal (in-memory) tracking, and avoid spurious
"In OStoreDB::ArchiveJob::~ArchiveJob(): will leave the job owned after destruction."
message in the logs.

This avoid getting a cassandra pacakge instead of the intended one.
Also added better logging for the eos container startup output (kubectl logs is unreliable).

The maintenance process replaces the garbage collector process. It now
runs both garbage collection and disk reports.

Extended unit test to also simulate reporter.
Fixed issue with trimming trying to trim the wrong type of queue.
Fixed report type not properly extracted when popping request for report.