grafana: fix entrypoint and service variable dropdowns, remove connection per service panel #10692
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What does this PR do?
This MR updates the dashboard JSON models in contrib/grafana to update the expressions that auto-populate the
entrypoint
andservice
variable dropdowns. The current expressions based on metrics that do not exist (traefik_service_open_connections
andtraefik_entrypoint_open_connections
). In addition, when the connections metric was refactored in PR #9656, open connections per service was removed as it did not make sense at the HTTP/application level so this panel is also removed.Motivation
Issue #10691
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Additional Notes