[HttpClient] Add net.peer.name and net.peer.port on metric dimensions

[vishweshbankwar]

Towards #3373

Changes

Added dimensions as per spec

For significant contributions please make sure you have completed the following items:

• Appropriate CHANGELOG.md updated for non-trivial changes
• Design discussion issue #
• Changes in public API reviewed

[codecov]

Codecov Report

Merging #3907 (a18df16) into main (a758c60) will decrease coverage by 0.12%.
The diff coverage is 55.55%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3907      +/-   ##
==========================================
- Coverage   87.35%   87.23%   -0.13%     
==========================================
  Files         279      279              
  Lines       10781    10792      +11     
==========================================
- Hits         9418     9414       -4     
- Misses       1363     1378      +15     

Impacted Files	Coverage Δ
...ementation/HttpHandlerMetricsDiagnosticListener.cs	70.00% <55.55%> (-24.74%)	⬇️
...porter.OpenTelemetryProtocol/OtlpMetricExporter.cs	72.72% <0.00%> (-13.64%)	⬇️
...tation/OpenTelemetryProtocolExporterEventSource.cs	85.00% <0.00%> (-10.00%)	⬇️
src/OpenTelemetry/BatchExportProcessor.cs	82.24% <0.00%> (-1.87%)	⬇️
...Telemetry/Internal/SelfDiagnosticsEventListener.cs	96.87% <0.00%> (-0.79%)	⬇️
...ZPages/Implementation/ZPagesExporterEventSource.cs	62.50% <0.00%> (+6.25%)	⬆️