fix: remove usage of serviceName property in tests for otel collector

[mustafain117]

Which problem is this PR solving?

• resolves Example and tests for otel collector exporter is not updated still uses serviceName #2278
• removes incorrect usage of serviceName property from tests in opentelemetry-exporter-otlp-http package

Short description of the changes

• Two test cases in package opentelemetry-exporter-otlp-http are using the serviceName property for configuration of OTLPTraceExporter and OTPLMetricExporter.serviceName is not a valid property of the config object (OTLPExporterNodeConfigBase), this PR removes the usage of this property in the test cases.

[linux-foundation-easycla]

The committers are authorized under a signed CLA.

• ✅ Mustafain Ali Khan (68aa0c6)

[codecov]

Codecov Report

Merging #2491 (68aa0c6) into main (6a78db1) will decrease coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #2491      +/-   ##
==========================================
- Coverage   93.22%   93.20%   -0.02%     
==========================================
  Files         137      137              
  Lines        5017     5017              
  Branches     1060     1060              
==========================================
- Hits         4677     4676       -1     
- Misses        340      341       +1     

Impacted Files	Coverage Δ
...emetry-core/src/platform/node/RandomIdGenerator.ts	87.50% <0.00%> (-6.25%)	⬇️

[dyladan]

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