Allow user to pass in metrics namespace

[splunkericl]

trafficstars

Description:
Adding a configuration that allows user to configure their metrics namespace

Link to tracking Issue: https://github.com/open-telemetry/opentelemetry-collector/issues/5692

Testing: Added a unit test to verify namespace can be customized

Documentation: Added godoc on the new namespace field

[codecov[bot]]

Codecov Report

Merging #5758 (15f2fe3) into main (b463d2a) will decrease coverage by 0.15%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #5758      +/-   ##
==========================================
- Coverage   91.78%   91.62%   -0.16%     
==========================================
  Files         192      192              
  Lines       11394    11429      +35     
==========================================
+ Hits        10458    10472      +14     
- Misses        742      763      +21     
  Partials      194      194              

Impacted Files	Coverage Δ
service/telemetry.go	89.51% <100.00%> (+0.30%)	:arrow_up:
exporter/exporterhelper/queued_retry_inmemory.go	79.34% <0.00%> (-12.55%)	:arrow_down:
pdata/internal/metrics.go	87.76% <0.00%> (-4.74%)	:arrow_down:
component/exporter.go	100.00% <0.00%> (ø)
component/receiver.go	100.00% <0.00%> (ø)
component/processor.go	100.00% <0.00%> (ø)
pdata/internal/generated_pmetric.go	97.38% <0.00%> (+0.02%)	:arrow_up:

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[dmitryax]

Issue description is bit confusing. Can you please reply to https://github.com/open-telemetry/opentelemetry-collector/issues/5692#issuecomment-1201571189

[tigrannajaryan]

@dmitryax @TylerHelmuth any other comments or good to merge?

[github-actions[bot]]

This PR was marked stale due to lack of activity. It will be closed in 14 days.

[github-actions[bot]]

Closed as inactive. Feel free to reopen if this PR is still being worked on.