fix: ConvertNumeric now handles bools (#1336)

## Which problem is this PR solving?

- Closes #1335 

## Short description of the changes

- Add bool case to ConvertNumeric
- Add test for ConvertNumeric function

metrics/metrics.go

@@ -75,9 +75,12 @@ func ConvertNumeric(val interface{}) float64 {
 		return n
 	case float32:
 		return float64(n)
-	default:
-		return 0
+	case bool:
+		if n {
+			return 1
+		}
 	}
+	return 0
 }
 
 func PrefixMetricName(prefix string, name string) string {

metrics/metrics_test.go

@@ -1 +1,35 @@
 package metrics
+
+import "testing"
+
+func TestConvertNumeric(t *testing.T) {
+	tests := []struct {
+		name string
+		val  interface{}
+		want float64
+	}{
+		// TODO: Add test cases.
+		{"int", 17, 17},
+		{"uint", uint(17), 17},
+		{"int64", int64(17), 17},
+		{"uint64", uint64(17), 17},
+		{"int32", int32(17), 17},
+		{"uint32", uint32(17), 17},
+		{"int16", int16(17), 17},
+		{"uint16", uint16(17), 17},
+		{"int8", int8(17), 17},
+		{"uint8", uint8(17), 17},
+		{"float64", float64(17), 17},
+		{"float32", float32(17), 17},
+		{"bool", true, 1},
+		{"bool", false, 0},
+		{"string", "17", 0},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := ConvertNumeric(tt.val); got != tt.want {
+				t.Errorf("ConvertNumeric() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}