This adds a service discovery configuration for promtail to also
collect logs for Gerrit installations in Kubernetes. The installations
will be discovered by namespace and a given label.
Change-Id: I894e47f37428add9b44df6596950d314ee2a3ed0
This adds the promtail chart to the installation that allows to
collect the logs of the applications in the cluster, which are written
to stdout of the containers.
This will only collect logs from pods in the same namespace as the
monitoring setup. In a later change also logs from Gerrit instances
in Kubernetes will be added.
Change-Id: I86c5c5470eaa31191fb5ac339ee21dee85106097