Use user defined loopback address if available (#374)

[CoenraadS]

When a loopback address is specified, use it directly instead of using localhost.
Because DNS resolution on localhost may resolve to IPV6 (::1), although the user may have expected an IPV4 loopback address (127.0.0.1).

Resolved #374 & #375

[lukebakken]

Thanks!

@CoenraadS are you able to test this change in your environment, since you can reproduce the issue?

[codecov]

Codecov Report

Attention: Patch coverage is 60.00000% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 91.75%. Comparing base (f2904b0) to head (0eed28b).
Report is 1 commits behind head on main.

Files	Patch %	Lines
RabbitMQ.Stream.Client/StreamSystem.cs	60.00%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #377      +/-   ##
==========================================
- Coverage   92.05%   91.75%   -0.30%     
==========================================
  Files         118      118              
  Lines       12102    12123      +21     
  Branches      936      938       +2     
==========================================
- Hits        11140    11124      -16     
- Misses        742      778      +36     
- Partials      220      221       +1     

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[CoenraadS]

Thanks!

@CoenraadS are you able to test this change in your environment, since you can reproduce the issue?

Yes, the documentation sample now works for me.

A test failed in the pipeline: ConsumerShouldReceiveDelivery, but locally it passes for me.

[Gsantomaggio]

A test failed in the pipeline: ConsumerShouldReceiveDelivery, but locally it passes for me.

Yes, sometimes it fails on the CI. I need to check why!

[Gsantomaggio]

LGTM!

Thank you!

[lukebakken]

@CoenraadS thank you very much!

[Gsantomaggio]

FYI: https://github.com/rabbitmq/rabbitmq-stream-dotnet-client/releases/tag/v1.8.4