feat: export run_loop_busy for processes

metrics/group_processes.go

@@ -133,6 +133,7 @@ func (p *ProcessesMetricGroup) GetMetrics(status *models.FullStatus) {
 		tags := p.getTags(processName, &process)
 		metrics["degraded"] = process.Degraded
 		metrics["excluded"] = process.Excluded
+		metrics["run_loop_busy"] = process.RunLoopBusy
 		if process.Cpu != nil {
 			metrics["cpu_cores"] = process.Cpu.UsageCores
 		}

models/process.go

@@ -30,6 +30,7 @@ type Process struct {
 	Messages    []ProcessMessage `json:"messages"`
 	Network     *ProcessNetwork  `json:"network"`
 	Roles       []ProcessRole    `json:"roles"`
+	RunLoopBusy float64          `json:"run_loop_busy"`
 }
 
 type ProcessCpu struct {

models/process_test.go

@@ -30,6 +30,7 @@ func TestProcessSingleBasic(t *testing.T) {
 	assert.False(t, process.Excluded)
 	assert.Equal(t, process.FaultDomain, "2f768c26fc0f01ce8af5402f7779b62c")
 	assert.Equal(t, process.MachineId, "2f768c26fc0f01ce8af5402f7779b62c")
+	assert.Greater(t, process.RunLoopBusy, 0.0)
 }
 
 func TestProcessCpuSingleBasic(t *testing.T) {