Code review comments, enum naming

Author: marcalff

sdk/include/opentelemetry/sdk/configuration/otlp_http_encoding.h

@@ -15,7 +15,7 @@ namespace configuration
 
 // YAML-SCHEMA: schema/common.json
 // YAML-NODE: OtlpHttpEncoding
-enum enum_otlp_http_encoding : std::uint8_t
+enum class OtlpHttpEncoding : std::uint8_t
 {
   protobuf,
   json

sdk/include/opentelemetry/sdk/configuration/otlp_http_log_record_exporter_configuration.h

@@ -36,7 +36,7 @@ class OtlpHttpLogRecordExporterConfiguration : public LogRecordExporterConfigura
   std::string headers_list;
   std::string compression;
   std::size_t timeout{0};
-  enum_otlp_http_encoding encoding{protobuf};
+  OtlpHttpEncoding encoding{OtlpHttpEncoding::protobuf};
 };
 
 }  // namespace configuration

sdk/include/opentelemetry/sdk/configuration/otlp_http_span_exporter_configuration.h

@@ -36,7 +36,7 @@ class OtlpHttpSpanExporterConfiguration : public SpanExporterConfiguration
   std::string headers_list;
   std::string compression;
   std::size_t timeout{0};
-  enum_otlp_http_encoding encoding{protobuf};
+  OtlpHttpEncoding encoding{OtlpHttpEncoding::protobuf};
 };
 
 }  // namespace configuration