message: test: fixing a test bug
  Risk Level: n/a (test only)
  Testing: now testing 100 continue with via
  Docs Changes: n/a
  Release Notes: n/a
diff: @@ -387,6 +387,7 @@ TEST_P(IntegrationTest, ViaAppendHeaderOnly) {
  // response path.
  TEST_P(IntegrationTest, ViaAppendWith100Continue) {
  config_helper_.addConfigModifier(setVia("foo"));
  + testEnvoyHandling100Continue(false, "foo");
  }
  // Test delayed close semantics for downstream HTTP/1.1 connections. When an early response is
  