bug logging: write meta_code tag again for now

commit_hash:e50a2a2597f9782e65bb0d878ca5fdc9d500d843

Author: Anton3

core/functional_tests/basic_chaos/tests-deadline/test_client.py

@@ -222,7 +222,7 @@ async def test_fake_deadline_expired_with_exception(
     )
 
     assert deadline_warning['body'] == 'Deadline expired'
-    assert deadline_warning['http.response.status_code'] == '504'
+    assert deadline_warning['meta_code'] == '504'
 
 
 async def test_fake_deadline_expired(

core/src/tracing/tags.cpp

@@ -28,7 +28,7 @@ const std::string kHttpRequestMethod = "http.request.method";
 
 const std::string kHttpStatusCode = "meta_code";
 
-const std::string kHttpResponseStatusCode = "http.response.status_code";
+const std::string kHttpResponseStatusCode = "meta_code";
 
 const std::string kHttpRoute = "http.route";