order the output for stable metrics since we're supporting more than just stable now

Change-Id: Idd16bffa058981cb7616dca8aea7966ae689de13

test/instrumentation/metric.go

@@ -53,6 +53,11 @@ type byFQName []metric
 
 func (ms byFQName) Len() int { return len(ms) }
 func (ms byFQName) Less(i, j int) bool {
+	if ms[i].StabilityLevel < ms[j].StabilityLevel {
+		return true
+	} else if ms[i].StabilityLevel > ms[j].StabilityLevel {
+		return false
+	}
 	return ms[i].buildFQName() < ms[j].buildFQName()
 }
 func (ms byFQName) Swap(i, j int) {

test/instrumentation/testdata/pkg/kubelet/metrics/metrics.go

@@ -469,7 +469,7 @@ var (
 			Subsystem:      KubeletSubsystem,
 			Name:           RunningContainersKey,
 			Help:           "Number of containers currently running",
-			StabilityLevel: metrics.ALPHA,
+			StabilityLevel: metrics.BETA,
 		},
 		[]string{"container_state"},
 	)

test/instrumentation/testdata/test-stable-metrics-list.yaml

@@ -39,14 +39,13 @@
   type: Summary
   stabilityLevel: BETA
   maxAge: 120000000000
-- name: multiline
+- name: running_containers
   subsystem: kubelet
-  help: Cumulative number of pod preemptions by preemption resource asdf asdf asdf
+  help: Number of containers currently running
-    asdfas dfasdf
+  type: Gauge
-  type: Counter
+  stabilityLevel: BETA
-  stabilityLevel: STABLE
   labels:
-  - preemption_signal
+  - container_state
 - name: runtime_operations_duration_seconds
   subsystem: kubelet
   help: Duration in seconds of runtime operations. Broken down by operation type.
@@ -69,43 +68,6 @@
   - 119.20928955078125
   - 298.0232238769531
   - 745.0580596923828
-- name: summary_metric_test
-  subsystem: kubelet
-  help: Cumulative number of device plugin registrations. Broken down by resource
-    name.
-  type: Summary
-  stabilityLevel: STABLE
-- name: summary_vec_metric_test
-  subsystem: kubelet
-  help: Duration in seconds to serve a device plugin Allocation request. Broken down
-    by resource name.
-  type: Summary
-  stabilityLevel: STABLE
-  labels:
-  - resource_name
-  objectives:
-    0.5: 0.5
-    0.75: 0.75
-  ageBuckets: 5
-  bufCap: 500
-  maxAge: 600000000000
-- name: test_histogram_metric
-  subsystem: kubelet
-  help: Interval in seconds between relisting in PLEG.
-  type: Histogram
-  stabilityLevel: STABLE
-  buckets:
-  - 0.005
-  - 0.01
-  - 0.025
-  - 0.05
-  - 0.1
-  - 0.25
-  - 0.5
-  - 1
-  - 2.5
-  - 5
-  - 10
 - name: priority_level_seat_utilization
   subsystem: subsystem
   namespace: namespace
@@ -157,3 +119,48 @@
   constLabels:
     phase: blah
     somestring: executing
+- name: multiline
+  subsystem: kubelet
+  help: Cumulative number of pod preemptions by preemption resource asdf asdf asdf
+    asdfas dfasdf
+  type: Counter
+  stabilityLevel: STABLE
+  labels:
+  - preemption_signal
+- name: summary_metric_test
+  subsystem: kubelet
+  help: Cumulative number of device plugin registrations. Broken down by resource
+    name.
+  type: Summary
+  stabilityLevel: STABLE
+- name: summary_vec_metric_test
+  subsystem: kubelet
+  help: Duration in seconds to serve a device plugin Allocation request. Broken down
+    by resource name.
+  type: Summary
+  stabilityLevel: STABLE
+  labels:
+  - resource_name
+  objectives:
+    0.5: 0.5
+    0.75: 0.75
+  ageBuckets: 5
+  bufCap: 500
+  maxAge: 600000000000
+- name: test_histogram_metric
+  subsystem: kubelet
+  help: Interval in seconds between relisting in PLEG.
+  type: Histogram
+  stabilityLevel: STABLE
+  buckets:
+  - 0.005
+  - 0.01
+  - 0.025
+  - 0.05
+  - 0.1
+  - 0.25
+  - 0.5
+  - 1
+  - 2.5
+  - 5
+  - 10