Seth Foster 88fb30e0da Delete jobs without loading objects first ...

The commit is intended to speed up the cleanup_jobs command in awx. Old
methods takes 7+ hours to delete 1 million old jobs. New method takes
around 6 minutes.

Leverages a sub-classed Collector, called AWXCollector, that does not
load in objects before deleting them. Instead querysets, which are
lazily evaluated, are used in places where Collector normally keeps a
list of objects.

Finally, a couple of tests to ensure parity between old Collector and
AWXCollector. That is, any object that is updated/removed from the
database using Collector should be have identical operations using
AWXCollector.

tower issue 1103

2020-03-19 14:14:02 -04:00

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