Services thread process pools

Removing process pools because we don't want to clone httpd processes. So instead we'll just stick with using threadpools. The old services were using threads anyways, but the pool will now just at least throttle the number of threads created.

We wanted to use the process pools because we wanted additional concurrency that did not have interference with the pythong GIL.

Changed default size of thread pool from 5 to 12.