properly initialise the random number generator in the integration tests

integrationtests/self/self_suite_test.go

@@ -1,15 +1,20 @@
 package self_test
 
 import (
+	"math/rand"
+	"testing"
+
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
 
 	_ "github.com/lucas-clemente/quic-go/integrationtests/tools/testlog"
-
-	"testing"
 )
 
 func TestSelf(t *testing.T) {
 	RegisterFailHandler(Fail)
 	RunSpecs(t, "Self integration tests")
 }
+
+var _ = BeforeSuite(func() {
+	rand.Seed(GinkgoRandomSeed())
+})