[OC-5149] Adjust max requests handled by LMS/CMS gunicorn workers  (#345)
[OC-5149] Adjust max requests handled by LMS/CMS gunicorn workers  (#345)

* Adds EDXAPP_CMS_MAX_REQ: 1000
* Reduces EDXAPP_LMS_MAX_REQ from 20000 to 5000

This allows newly provisioned appservers to recovery from memory leaks faster, and reflects the lower number of requests per day expected for our most common instances.

open-craft/opencraft,open-craft/opencraft,open-craft/opencraft,open-craft/opencraft,open-craft/opencraft