Node status timing out after enabling FDW on the geo testbed
Getting the node status is taking almost 100 seconds which is timing out web workers on the geo testbed. This started happening after enabling FDW. ``` irb(main):001:0> GeoNodeStatus.current_node_status => #<GeoNodeStatus id: 3, geo_node_id: 100011, db_replication_lag_seconds: 0, repositories_count: 3278571, repositories_synced_count: 212046, repositories_failed_count: 80264, lfs_objects_count: 3156941, lfs_objects_synced_count: 3155522, lfs_objects_failed_count: 1419, attachments_count: 1985444, attachments_synced_count: 1973887, attachments_failed_count: 11557, last_event_id: 17978, last_event_date: "2018-01-08 11:15:22", cursor_last_event_id: 17978, cursor_last_event_date: "2018-01-08 11:15:22", created_at: "2017-12-14 11:03:24", updated_at: "2018-01-05 13:18:27", last_successful_status_check_at: "2018-01-08 11:38:31", status_message: "", replication_slots_count: nil, replication_slots_used_count: nil, replication_slots_max_retained_wal_bytes: nil, wikis_count: 3155878, wikis_synced_count: 189755, wikis_failed_count: 23588> irb(main):002:0> timing = Benchmark.measure {GeoNodeStatus.current_node_status} => #<Benchmark::Tms:0x00007f6c310556c8 @label="", @real=95.2507752571255, @cstime=0.0, @cutime=0.0, @stime=0.009999999999999787, @utime=0.05999999999999872, @total=0.06999999999999851> ```
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