[prometheus] Use OTEL helper instead of tlscfg package

[chahatsagarmain]

Which problem is this PR solving?

• Part of [Bug]: race condition when reloading TLS certificates #4316

Description of the changes

How was this change tested?

Checklist

• I have read https://github.com/jaegertracing/jaeger/blob/master/CONTRIBUTING_GUIDELINES.md
• I have signed all commits
• I have added unit tests for the new functionality
• I have run lint and test steps successfully
  • for jaeger: make lint test
  • for jaeger-ui: yarn lint and yarn test

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.41%. Comparing base (58e08c5) to head (33129e7).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6266      +/-   ##
==========================================
- Coverage   96.41%   96.41%   -0.01%     
==========================================
  Files         355      355              
  Lines       20158    20154       -4     
==========================================
- Hits        19436    19432       -4     
  Misses        532      532              
  Partials      190      190              

Flag	Coverage Δ
badger_v1	8.31% <ø> (ø)
badger_v2	1.67% <0.00%> (+<0.01%)	⬆️
cassandra-4.x-v1	14.39% <ø> (ø)
cassandra-4.x-v2	1.61% <0.00%> (+<0.01%)	⬆️
cassandra-5.x-v1	14.39% <ø> (ø)
cassandra-5.x-v2	1.61% <0.00%> (+<0.01%)	⬆️
elasticsearch-6.x-v1	18.60% <ø> (ø)
elasticsearch-7.x-v1	18.67% <ø> (-0.01%)	⬇️
elasticsearch-8.x-v1	18.85% <ø> (+<0.01%)	⬆️
elasticsearch-8.x-v2	1.66% <0.00%> (-0.01%)	⬇️
grpc_v1	9.44% <ø> (ø)
grpc_v2	6.98% <0.00%> (+<0.01%)	⬆️
kafka-v1	8.88% <ø> (ø)
kafka-v2	1.67% <0.00%> (+<0.01%)	⬆️
memory_v2	1.67% <0.00%> (+0.01%)	⬆️
opensearch-1.x-v1	18.72% <ø> (ø)
opensearch-2.x-v1	18.72% <ø> (-0.01%)	⬇️
opensearch-2.x-v2	1.67% <0.00%> (+<0.01%)	⬆️
tailsampling-processor	0.46% <0.00%> (+<0.01%)	⬆️
unittests	95.33% <100.00%> (-0.01%)	⬇️

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