monitoring: container monitoring should exclude jaeger side-car containers

Created by: slimsag

In Kubernetes deployments each pod runs a jaeger side-car container. These are small relays, effectively, and their performance is not important or notable.

We should filter them out of the container monitoring section of all dashboards:

Screenshot from https://sourcegraph.com/-/debug/grafana/d/gitserver/git-server?orgId=1