test: deflake an integration test (envoyproxy#36674)

waitForAccessLog asserts the log you're waiting for is the last one. For
periodic logging on slow machines there may end up being extra log
entries so allow excess.


https://github.com/envoyproxy/envoy/actions/runs/11371697784/job/31634429494

Signed-off-by: Alyssa Wilk <alyssar@chromium.org>

test/integration/protocol_integration_test.cc

@@ -462,7 +462,7 @@ TEST_P(ProtocolIntegrationTest, PeriodicAccessLog) {
       {":method", "GET"}, {":path", "/test"}, {":scheme", "http"}, {":authority", "host.com"}});
   waitForNextUpstreamRequest();
   EXPECT_EQ(AccessLogType_Name(AccessLog::AccessLogType::DownstreamPeriodic),
-            waitForAccessLog(access_log_name_));
+            waitForAccessLog(access_log_name_, 0, true));
 
   upstream_request_->encodeHeaders(Http::TestResponseHeaderMapImpl{{":status", "200"}}, true);
   ASSERT_TRUE(response->waitForEndStream());