30-50% re-sync performance regression due to touch() of content and artifacts during sync
"touching" existing content and artifacts individually has led to a slowdown on re-syncs of between 30-50% depending on the size of the repo, due to performing (potentially) tens of thousands of extra queries. Copy is also likely impacted severely however I did not test it.
Bulk touch functionality was added to pulpcore by , but we must take advantage of it to eliminate the slowdown.
See the following spots where touch() is called in a loop:
Additionally it would be good to eliminate the extra query here: https://github.com/pulp/pulpcore/blob/feede7bb08b1e3107766ce534433cb7867fe52bd/pulpcore/content/handler.py#L715
As this was a significant performance regression introduced by 3.14, we should consider backporting the fixes. This will include  as well which will require a small portion of the refactor introduced here 
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