records.yaml: Add record name when TS logs unknown fields. (#12030)

It basically goes from:

 Warn:   Warn: Ignoring field 'x' at Line 17. Not registered and Unknown tag type '?'

To:

 Warn:   Warn: Ignoring field 'x' [proxy.config.some.field.x] at Line 17. Not registered and Unknown tag type '?'

Record name is now included. This helps in case of multiple fields with
that belong to different maps but have the same name.

src/records/RecYAMLDecoder.cc

@@ -94,8 +94,8 @@ SetRecordFromYAMLNode(CfgNode const &field, swoc::Errata &errata)
     // we ignore it.
     auto [dtype, e] = detail::try_deduce_type(field.value_node);
     if (!e.empty()) {
-      errata.note(ERRATA_WARN, "Ignoring field '{}' at Line {}. Not registered and {}", field.node.as<std::string>(),
-                  field.node.Mark().line + 1, e);
+      errata.note(ERRATA_WARN, "Ignoring field '{}' [{}] at Line {}. Not registered and {}", field.node.as<std::string>(),
+                  field.get_record_name(), field.node.Mark().line + 1, e);
       // We can't continue without knowing the type.
       return;
     }

tests/gold_tests/records/records_yaml.test.py

@@ -66,8 +66,10 @@
 var2 = 'proxy.config.test.not_registered.field2'
 ts.Disk.diags_log.Content += Testers.ContainsExpression(f"Unrecognized configuration value '{var2}", "Field should be ignored")
 
-ts.Disk.traffic_out.Content += Testers.ContainsExpression(f"Ignoring field 'filenamee'", "Field should be ignored")
-ts.Disk.traffic_out.Content += Testers.ContainsExpression(f"Ignoring field 'filenam'", "Field should be ignored")
+ts.Disk.traffic_out.Content += Testers.ContainsExpression(
+    f"Ignoring field 'filenamee' \\[proxy.config.ssl.client.cert.filenamee\\]", "Field should be ignored")
+ts.Disk.traffic_out.Content += Testers.ContainsExpression(
+    f"Ignoring field 'filenam' \\[proxy.config.ssl.client.cert.filenam\\]", "Field should be ignored")
 
 # 1
 tr = Test.AddTestRun("Query unregistered records.")