feat(sinks): enable sinks with noauth.

[lpegoraro]

TODOs

• Integration test on local machine

Enable sinks to be configured withou username/password.

When creating sinks with NoAuth using the following sample configuration.

authentication:
  type: noauth
exporter:
  remote_host: https://localhost:6657

would generate the following otel collector.

---
receivers:
  kafka:
    brokers:
    - kafka:9092
    topic: otlp_metrics-sink-id-22
    protocol_version: 2.0.0
extensions:
  pprof:
    endpoint: 0.0.0.0:1888
exporters:
  otlphttp:
    endpoint: https://localhost:6657
service:
  extensions:
  - pprof
  pipelines:
    metrics:
      receivers:
      - kafka
      exporters:
      - otlphttp

Results
Sink is created successfully

Maestro is able to spin collector succesfully without the basicauth extension.

[codecov-commenter]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (583c5fd) 48.53% compared to head (6f968ae) 57.99%.
Report is 10 commits behind head on develop.

Files	Patch %	Lines
maestro/deployment/service.go	0.00%	1 Missing ⚠️

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Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #2857      +/-   ##
===========================================
+ Coverage    48.53%   57.99%   +9.46%     
===========================================
  Files           85       67      -18     
  Lines         6330     5216    -1114     
===========================================
- Hits          3072     3025      -47     
+ Misses        3258     2191    -1067     

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