improve large size volume cloning e2e test

Author: umagnus

test/e2e/dynamic_provisioning_test.go

@@ -1487,10 +1487,10 @@ var _ = ginkgo.Describe("Dynamic Provisioning", func() {
 		skipIfUsingInTreeVolumePlugin()
 
 		pod := testsuites.PodDetails{
-			Cmd: "echo 'hello world' > /mnt/test-1/data && grep 'hello world' /mnt/test-1/data && dd if=/dev/zero of=/mnt/test-1/test bs=99G count=5",
+			Cmd: "echo 'hello world' > /mnt/test-1/data && grep 'hello world' /mnt/test-1/data && dd if=/dev/zero of=/mnt/test-1/test bs=1G count=100",
 			Volumes: []testsuites.VolumeDetails{
 				{
-					ClaimSize: "100Gi",
+					ClaimSize: "101Gi",
 					VolumeMount: testsuites.VolumeMountDetails{
 						NameGenerate:      "test-volume-",
 						MountPathGenerate: "/mnt/test-",