Fix node_disk_saturation rule (should return value in seconds).

Author: nickmintel

rules/rules.libsonnet

@@ -314,15 +314,15 @@
             // Disk saturation (ms spent, by rate() it's bound by 1 second)
             record: ':node_disk_saturation:avg_irate',
             expr: |||
-              avg(irate(node_disk_io_time_weighted_seconds_total{%(nodeExporterSelector)s,%(diskDeviceSelector)s}[1m]) / 1e3)
+              avg(irate(node_disk_io_time_weighted_seconds_total{%(nodeExporterSelector)s,%(diskDeviceSelector)s}[1m]))
             ||| % $._config,
           },
           {
             // Disk saturation (ms spent, by rate() it's bound by 1 second)
             record: 'node:node_disk_saturation:avg_irate',
             expr: |||
               avg by (node) (
-                irate(node_disk_io_time_weighted_seconds_total{%(nodeExporterSelector)s,%(diskDeviceSelector)s}[1m]) / 1e3
+                irate(node_disk_io_time_weighted_seconds_total{%(nodeExporterSelector)s,%(diskDeviceSelector)s}[1m])
               * on (namespace, %(podLabel)s) group_left(node)
                 node_namespace_pod:kube_pod_info:
               )