[grpc][Gpr_To_Absl_Logging] Migrating from gpr to absl logging - gpr_log (#36676)

[grpc][Gpr_To_Absl_Logging] Migrating from gpr to absl logging - gpr_log
Reducing log severity based on a user request to reduce log spam

Closes #36676

COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36676 from tanvi-jagtap:tjagtap_log_spam_01 00a8ba4095
PiperOrigin-RevId: 635700714

src/core/ext/transport/chttp2/transport/chttp2_transport.cc

@@ -1325,11 +1325,11 @@ static bool contains_non_ok_status(grpc_metadata_batch* batch) {
 
 static void log_metadata(const grpc_metadata_batch* md_batch, uint32_t id,
                          bool is_client, bool is_initial) {
-  LOG(INFO) << "--metadata--";
+  VLOG(2) << "--metadata--";
   const std::string prefix = absl::StrCat(
       "HTTP:", id, is_initial ? ":HDR" : ":TRL", is_client ? ":CLI:" : ":SVR:");
   md_batch->Log([&prefix](absl::string_view key, absl::string_view value) {
-    LOG(INFO) << absl::StrCat(prefix, key, ": ", value);
+    VLOG(2) << absl::StrCat(prefix, key, ": ", value);
   });
 }