Add high CPU alerts for the production fleet
We had a few issues caused by high cpu on the production fleet:
- pullmirror -https://gitlab.com/gitlab-com/infrastructure/issues/2894
- web and api - https://gitlab.com/gitlab-com/infrastructure/issues/2858
- haproxy - https://gitlab.com/gitlab-com/infrastructure/issues/2880
We should add alerts so we can increase capacity well in advance of our customers experiencing pain.
Edited by John Jarvis