Update the grafana chart to 3.8.15
Brings in an updated grafana with security fixes
Also updates the grafana chart for k8s 1.16 api deprecations
Part of #1562 (closed)
Edited by DJ Mountney
Brings in an updated grafana with security fixes
Also updates the grafana chart for k8s 1.16 api deprecations
Part of #1562 (closed)