lnwire: reduce range of randomly generated features in testing.Quick case

This commit reduces the range of the number of randomly generated
features in order to speed up the run time of the integration tests a
bit.

lnwire/lnwire_test.go

@@ -51,7 +51,7 @@ func randPubKey() (*btcec.PublicKey, error) {
 }
 
 func randFeatureVector(r *rand.Rand) *FeatureVector {
-	numFeatures := r.Int31n(131123)
+	numFeatures := r.Int31n(10000)
 	features := make([]Feature, numFeatures)
 	for i := int32(0); i < numFeatures; i++ {
 		features[i] = Feature{