Can not compile when using `WITH_STL=CXX11` with legacy toolchain

[owent]

Describe your environment

OS: Linux
Compiler: GCC 4.8.5
otel-cpp version: 1.17.0

Steps to reproduce
Building otel-cpp 1.17.0

What is the expected behavior?
Building success.

What is the actual behavior?

/home/runner/work/cmake-toolset/cmake-toolset/test/third_party/packages/opentelemetry-cpp-v1.17.0/exporters/memory/src/in_memory_metric_exporter_factory.cc: In member function ‘virtual opentelemetry::v1::sdk::common::ExportResult opentelemetry::v1::exporter::memory::{anonymous}::InMemoryMetricExporter::Export(const opentelemetry::v1::sdk::metrics::ResourceMetrics&)’:
/home/runner/work/cmake-toolset/cmake-toolset/test/third_party/packages/opentelemetry-cpp-v1.17.0/exporters/memory/src/in_memory_metric_exporter_factory.cc:52:16: error: ‘make_unique’ is not a member of ‘std’
     data_->Add(std::make_unique<ResourceMetrics>(data));
                ^
/home/runner/work/cmake-toolset/cmake-toolset/test/third_party/packages/opentelemetry-cpp-v1.17.0/exporters/memory/src/in_memory_metric_exporter_factory.cc:52:48: error: expected primary-expression before ‘>’ token
     data_->Add(std::make_unique<ResourceMetrics>(data));

// ...
/home/runner/work/cmake-toolset/cmake-toolset/test/third_party/packages/opentelemetry-cpp-v1.17.0/exporters/memory/src/in_memory_metric_exporter_factory.cc:82:26: error: parameter declared ‘auto’
   return Create(data, [](auto) { return AggregationTemporality::kCumulative; });


// ...
/home/runner/work/cmake-toolset/cmake-toolset/test/third_party/packages/opentelemetry-cpp-v1.17.0/exporters/memory/src/in_memory_metric_data.cc: In member function ‘virtual void opentelemetry::v1::exporter::memory::SimpleAggregateInMemoryMetricData::Add(std::unique_ptr<opentelemetry::v1::sdk::metrics::ResourceMetrics>)’:
/home/runner/work/cmake-toolset/cmake-toolset/test/third_party/packages/opentelemetry-cpp-v1.17.0/exporters/memory/src/in_memory_metric_data.cc:34:30: error: converting to ‘std::map<std::tuple<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::map<opentelemetry::v1::sdk::common::OrderedAttributeMap, absl::lts_2020_02_25::variant<opentelemetry::v1::sdk::metrics::SumPointData, opentelemetry::v1::sdk::metrics::HistogramPointData, opentelemetry::v1::sdk::metrics::LastValuePointData, opentelemetry::v1::sdk::metrics::DropPointData> > >::key_type {aka std::tuple<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >}’ from initializer list would use explicit constructor ‘constexpr std::tuple<_T1, _T2>::tuple(const _T1&, const _T2&) [with _T1 = std::basic_string<char>; _T2 = std::basic_string<char>]’
         data_[{scope, metric}].insert({pda.attributes, pda.point_data});
                              ^
/home/runner/work/cmake-toolset/cmake-toolset/test/third_party/packages/opentelemetry-cpp-v1.17.0/exporters/memory/src/in_memory_metric_data.cc: In member function ‘const AttributeToPoint& opentelemetry::v1::exporter::memory::SimpleAggregateInMemoryMetricData::Get(const string&, const string&)’:
/home/runner/work/cmake-toolset/cmake-toolset/test/third_party/packages/opentelemetry-cpp-v1.17.0/exporters/memory/src/in_memory_metric_data.cc:44:31: error: converting to ‘std::map<std::tuple<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::map<opentelemetry::v1::sdk::common::OrderedAttributeMap, absl::lts_2020_02_25::variant<opentelemetry::v1::sdk::metrics::SumPointData, opentelemetry::v1::sdk::metrics::HistogramPointData, opentelemetry::v1::sdk::metrics::LastValuePointData, opentelemetry::v1::sdk::metrics::DropPointData> > >::key_type {aka std::tuple<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >}’ from initializer list would use explicit constructor ‘constexpr std::tuple<_T1, _T2>::tuple(const _T1&, const _T2&) [with _T1 = std::basic_string<char>; _T2 = std::basic_string<char>]’
   return data_[{scope, metric}];                    ^