calcs/hazard/disagg/core:
calcs/hazard/disagg/core:

Cleaner definition of hazard curve and disagg task arg generators.

The calculation workflow (with proper queuing as the appropriate time)
works now.


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Former-commit-id: 47444b57c7ff958c24e337f4821640404011e8ee
Former-commit-id: 40204488493399ba8faf30c3787f3af5ab57b20f
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine