Master is broken

It seems !3310 (merged) introduced this error.

Job #39605707 failed for 49a2f7e0:

  1) Geo::MetricsUpdateService#execute when node is the primary attempts to retrieve metrics from all nodes
     Failure/Error: expect(Gitlab::Metrics.registry.get(:geo_repositories).values.count).to eq(2)

       expected: 2
            got: 3

       (compared using ==)
     # ./spec/services/geo/metrics_update_service_spec.rb:54:in `block (4 levels) in <top (required)>'
     # ./spec/spec_helper.rb:189:in `block (2 levels) in <top (required)>'