Skip long internal/statesync tests in -short mode

I added checks against testing.Short for tests that took longer than
about one second on my machine. Running with -short reduces the test
time of internal/statesync from about 54s to about 1.5s.

internal/statesync/block_queue_test.go

@@ -126,6 +126,10 @@ func TestBlockQueueWithFailures(t *testing.T) {
 // Test that when all the blocks are retrieved that the queue still holds on to
 // it's workers and in the event of failure can still fetch the failed block
 func TestBlockQueueBlocks(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping test in short mode")
+	}
+
 	peerID, err := types.NewNodeID("0011223344556677889900112233445566778899")
 	require.NoError(t, err)
 	queue := newBlockQueue(startHeight, stopHeight, 1, stopTime, 2)
@@ -176,6 +180,10 @@ loop:
 }
 
 func TestBlockQueueAcceptsNoMoreBlocks(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping test in short mode")
+	}
+
 	peerID, err := types.NewNodeID("0011223344556677889900112233445566778899")
 	require.NoError(t, err)
 	queue := newBlockQueue(startHeight, stopHeight, 1, stopTime, 1)

internal/statesync/reactor_test.go

@@ -197,6 +197,10 @@ func setup(
 }
 
 func TestReactor_Sync(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping test in short mode")
+	}
+
 	ctx, cancel := context.WithTimeout(context.Background(), 2*time.Minute)
 	defer cancel()
 
@@ -618,6 +622,10 @@ func TestReactor_StateProviderP2P(t *testing.T) {
 }
 
 func TestReactor_Backfill(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping test in short mode")
+	}
+
 	ctx, cancel := context.WithCancel(context.Background())
 	defer cancel()
 
@@ -626,6 +634,10 @@ func TestReactor_Backfill(t *testing.T) {
 	for _, failureRate := range failureRates {
 		failureRate := failureRate
 		t.Run(fmt.Sprintf("failure rate: %d", failureRate), func(t *testing.T) {
+			if testing.Short() && failureRate > 0 {
+				t.Skip("skipping test in short mode")
+			}
+
 			ctx, cancel := context.WithCancel(ctx)
 			defer cancel()
 

internal/statesync/syncer_test.go

@@ -22,6 +22,10 @@ import (
 )
 
 func TestSyncer_SyncAny(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping test in short mode")
+	}
+
 	ctx, cancel := context.WithCancel(context.Background())
 	defer cancel()