Disable analytics in loki

What does this MR do and why?

Avoid sending reports to stats.grafana.org, by default loki is set to generate reports about usage but is not able to reach the endpoint and generate multiple errors into logs. The aim of this MR is to disable this option.

caller=reporter.go:281 msg="failed to report usage" err="5 errors: Post \"https://stats.grafana.org/loki-usage-report\": dial tcp 0.0.0.0:443: connect: connection refused; Post \"https://stats.grafana.org/loki-usage-report\": dial tcp 0.0.0.0:443: connect: connection refused; Post \"https://stats.grafana.org/loki-usage-report\": dial tcp 0.0.0.0:443

Related reference(s)

Closes #1683 (closed)

Test coverage

CI configuration

CI pipelines perform an update for both management and workload clusters, this update will NOT perform a ClusterAPI rolling update (deletion and creation of new K8s nodes) by default.

For some cases, it may be relevant to perform more complex tests.

Theses features can be activated in an MR by adding one of these labels to the MR and will apply to the next pipelines.

• adding the label ci-featuretest-rolling-update pipelines will perform a node rolling update in the -update jobs (without version upgrades)
• adding the label ci-featuretest-upgrade-from-1.1.1 pipelines will perform an upgrade from Sylva 1.1.1 to your dev branch (including a k8s version upgrade resulting in a node rolling update)