observability: minor improvements + upgrade git (fixes CI) (!9871) · Merge requests · Administrator / sourcegraph · GitLab

Administrator requested to merge sg/minor-improvements into master Apr 15, 2020

Created by: slimsag

Fixes CI (alpine changed git version, not my fault)
Fixes an issue that may building prometheus/Grafana test images a pain
Fixes #9856
Fixes #9819