Disable per volume backoff behavior for sanity tests (#1094)

* Lower threshold of backoff for sanity tests

* Switch to zero

* Rm millisecond

Author: judemars

test/sanity/sanity_test.go

@@ -66,7 +66,7 @@ func TestSanity(t *testing.T) {
 
 	//Initialize GCE Driver
 	identityServer := driver.NewIdentityServer(gceDriver)
-	controllerServer := driver.NewControllerServer(gceDriver, cloudProvider, 1*time.Millisecond, 5*time.Minute)
+	controllerServer := driver.NewControllerServer(gceDriver, cloudProvider, 0, 5*time.Minute)
 	nodeServer := driver.NewNodeServer(gceDriver, mounter, deviceUtils, metadataservice.NewFakeService(), mountmanager.NewFakeStatter(mounter))
 	err = gceDriver.SetupGCEDriver(driverName, vendorVersion, extraLabels, identityServer, controllerServer, nodeServer)
 	if err != nil {