feat(sdk-node): lower diagnostic level

[cjihrig]

Which problem is this PR solving?

Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. List any dependencies that are required for this change.

Fixes #5304

Short description of the changes

This commit lowers the diagnostic level to debug when exporters are not explicitly provided and the default is used.

(Note - there are a couple other similar logs like 'OTEL_TRACES_EXPORTER contains "none". SDK will not be initialized.' but I was not sure if they should be updated too.)

Type of change

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

• Ran the test suite.
• Changed the log level of the modified test to 'debug' and verified that the previous logs were restored. I'm not sure if this is something that a unit test is desirable for, but I can add one if people think it is a good idea.

Checklist:

• Followed the style guidelines of this project

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 1 line in your changes missing coverage. Please review.

Project coverage is 94.54%. Comparing base (c00f36e) to head (91272b8).
Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
...imental/packages/opentelemetry-sdk-node/src/sdk.ts	50.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #5360   +/-   ##
=======================================
  Coverage   94.54%   94.54%           
=======================================
  Files         318      318           
  Lines        8051     8051           
  Branches     1694     1694           
=======================================
  Hits         7612     7612           
  Misses        439      439           

Files with missing lines	Coverage Δ
...ental/packages/opentelemetry-sdk-node/src/utils.ts	88.23% <100.00%> (ø)
...imental/packages/opentelemetry-sdk-node/src/sdk.ts	96.01% <50.00%> (ø)

[pichlermarc]

thanks 👍

[cjihrig]

@pichlermarc is there anything else I need to do on this? I notice codecov is failing.

[pichlermarc]

@pichlermarc is there anything else I need to do on this? I notice codecov is failing.

No, all good. Codecov is failing because this line was not covered by tests, but they were already not covered before you opened your PR so no need to take any action.