fix: update Snowflake domain front (#1337)

We're doing this due to problems with `cdn.sstatic.net`:

- https://lists.torproject.org/pipermail/anti-censorship-team/2023-September/000315.html
- https://forum.torproject.org/t/problems-with-snowflake-since-2023-09-20-broker-failure-unexpected-error-no-answer/9346

The reference issue is ooni/probe#2540.

While there, fix a typo in a test name.

---------

Co-authored-by: Simone Basso <bassosimone@gmail.com>

internal/experiment/torsf/integration_test.go

@@ -13,7 +13,6 @@ import (
 )
 
 func TestRunWithExistingTor(t *testing.T) {
- t.Skip("https://github.com/ooni/probe/issues/2540")
  if testing.Short() {
  t.Skip("skip test in short mode")
  }

internal/ptx/snowflake.go

@@ -45,7 +45,7 @@ func (d *snowflakeRendezvousMethodDomainFronting) BrokerURL() string {
 }
 
 func (d *snowflakeRendezvousMethodDomainFronting) FrontDomain() string {
- return "cdn.sstatic.net"
+ return "foursquare.com"
 }
 
 // NewSnowflakeRendezvousMethodAMP is a rendezvous method that

internal/ptx/snowflake_test.go

@@ -20,7 +20,7 @@ func TestSnowflakeMethodDomainFronting(t *testing.T) {
  if meth.BrokerURL() != brokerURL {
  t.Fatal("invalid broker URL")
  }
- const frontDomain = "cdn.sstatic.net"
+ const frontDomain = "foursquare.com"
  if meth.FrontDomain() != frontDomain {
  t.Fatal("invalid front domain")
  }

pkg/oonimkall/taskrunner_test.go

@@ -663,7 +663,7 @@ func TestTaskRunnerRun(t *testing.T) {
  assertReducedEventsLike(t, expect, reduced)
  })
 
- t.Run("with succes and max runtime", func(t *testing.T) {
+ t.Run("with success and max runtime", func(t *testing.T) {
  runner, emitter := newRunnerForTesting()
  runner.settings.Inputs = []string{"a", "b", "c", "d"}
  runner.settings.Options.MaxRuntime = 2