Grafana provides a repository for dashboards that can be used to easily
import dashboards. Providing these dashboards there would make it easier
for users not using the full setup provided here to still use the
dashboards. To be able to upload however, the datasource reference in the
dashboards has to be a template.
This is however not compatible with the way how the dashboards are imported
in the Grafana of the stack provided here. Thus, the variables are
removed during the installation.
Change-Id: I99f127882a6f7594ca1c40fbe1e299378e89f4e9
