Adds additional service labels for prometheus job names

John Jarvisrequested to merge
jarv/add-additional-labels-service into master

What does this MR do?

to align our job names on K8s with our job names on VMs, this sets labels on the service.

Requires gitlab-org/charts/gitlab!1537 (merged)

Part of gitlab-com/gl-infra/delivery#1167 (closed)

Edited by John Jarvis

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