flow,xproxyd: Bump up leakWaitTime to 250ms.

Change-Id: Iccfa704f41c5a9ec2de71b71b3faa497b7ac8890
diff --git a/runtime/internal/flow/conn/conn_test.go b/runtime/internal/flow/conn/conn_test.go
index b5b6eeb..c9ba7c0 100644
--- a/runtime/internal/flow/conn/conn_test.go
+++ b/runtime/internal/flow/conn/conn_test.go
@@ -19,7 +19,7 @@
 	"v.io/x/ref/test/goroutines"
 )
 
-const leakWaitTime = 100 * time.Millisecond
+const leakWaitTime = 250 * time.Millisecond
 
 var randData []byte
 
diff --git a/runtime/internal/flow/manager/manager_test.go b/runtime/internal/flow/manager/manager_test.go
index 9752a56..cce80f9 100644
--- a/runtime/internal/flow/manager/manager_test.go
+++ b/runtime/internal/flow/manager/manager_test.go
@@ -26,7 +26,7 @@
 	test.Init()
 }
 
-const leakWaitTime = 100 * time.Millisecond
+const leakWaitTime = 250 * time.Millisecond
 
 func TestDirectConnection(t *testing.T) {
 	defer goroutines.NoLeaks(t, leakWaitTime)()
diff --git a/services/xproxyd/proxy_test.go b/services/xproxyd/proxy_test.go
index bb85a2b..960e533 100644
--- a/services/xproxyd/proxy_test.go
+++ b/services/xproxyd/proxy_test.go
@@ -25,7 +25,7 @@
 )
 
 const (
-	leakWaitTime = 100 * time.Millisecond
+	leakWaitTime = 250 * time.Millisecond
 	pollTime     = 50 * time.Millisecond
 )