internal/prometheus: more human-readable time buckets

Let's make them slightly easier to query and reason about. From 100 ms
to 24 hours.

internal/prometheus/job_metrics.go

@@ -41,7 +41,7 @@ var (
 		Namespace: Namespace,
 		Subsystem: WorkerSubsystem,
 		Help:      "Duration spent by workers on a job.",
-		Buckets:   []float64{.1, .2, .5, 1, 2, 4, 8, 16, 32, 40, 48, 64, 96, 128, 160, 192, 224, 256, 320, 382, 448, 512, 640, 768, 896, 1024, 1280, 1536, 1792, 2048, 2304, 2560, 2816, 3072, 3328, 3584, 3840, 4096, 4608, 5120, 5632, 6144, 6656, 7168, 7680, 8192, 8704, 9216, 9728, 10240, 10752},
+		Buckets:   []float64{.1, .2, .5, 1, 2.5, 5, 10, 20, 30, 40, 60, 90, 120, 150, 180, 240, 300, 360, 420, 480, 540, 600, 720, 840, 960, 1080, 1200, 1320, 1440, 1560, 1680, 1800, 2100, 2400, 2700, 3000, 3600, 4800, 6000, 7200, 9000, 10800, 12600, 14400, 16200, 18000, 19800, 24000, 27000, 30000, 33000, 36000, 39600, 43200, 57600, 86400},
 	}, []string{"type", "status", "tenant", "arch"})
 )
 
@@ -51,7 +51,7 @@ var (
 		Namespace: Namespace,
 		Subsystem: WorkerSubsystem,
 		Help:      "Duration a job spends on the queue.",
-		Buckets:   []float64{.1, .2, .5, 1, 2, 4, 8, 16, 32, 40, 48, 64, 96, 128, 160, 192, 224, 256, 320, 382, 448, 512, 640, 768, 896, 1024, 1280, 1536, 1792, 2048, 2304, 2560, 2816, 3072, 3328, 3584, 3840, 4096, 4608, 5120, 5632, 6144, 6656, 7168, 7680, 8192, 8704, 9216, 9728, 10240, 10752},
+		Buckets:   []float64{.1, .2, .5, 1, 2.5, 5, 10, 20, 30, 40, 60, 90, 120, 150, 180, 240, 300, 360, 420, 480, 540, 600, 720, 840, 960, 1080, 1200, 1320, 1440, 1560, 1680, 1800, 2100, 2400, 2700, 3000, 3600, 4800, 6000, 7200, 9000, 10800, 12600, 14400, 16200, 18000, 19800, 24000, 27000, 30000, 33000, 36000, 39600, 43200, 57600, 86400},
 	}, []string{"type", "tenant", "arch"})
 )