Refactor EnvironmentLogger V1

[sarahchen6]

What does this PR do?
This PR moves the EnvironmentLogger module from the Core namespace to the Tracing namespace to remove product dependencies. It also updates its specs and any references to the module.

Motivation
The overall goal of this PR is to refactor the Core namespace so that it does not depend upon product implementation. This PR specifically addresses the EnvironmentLogger module.

Additional Notes
Currently the code still couples Tracing and Profiling; however, we are hoping to remove or separate the Profiling dependency soon.

How to test the change?
This change can be tested by running unit tests for the specific file bundle exec rspec spec/datadog/tracing/diagnostics/environment_logger_spec.rb and by running tests for the entire suite bundle exec rake spec:main.

[codecov-commenter]

Codecov Report

Merging #2985 (6d0b2b7) into master (75e0942) will decrease coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #2985      +/-   ##
==========================================
- Coverage   98.08%   98.07%   -0.01%     
==========================================
  Files        1301     1301              
  Lines       72104    72102       -2     
  Branches     3314     3314              
==========================================
- Hits        70722    70716       -6     
- Misses       1382     1386       +4     

Impacted Files	Coverage Δ
lib/datadog/tracing/workers/trace_writer.rb	96.25% <ø> (ø)
lib/datadog/core/configuration/components.rb	100.00% <100.00%> (ø)
lib/datadog/tracing/component.rb	100.00% <100.00%> (ø)
.../datadog/tracing/diagnostics/environment_logger.rb	97.69% <100.00%> (ø)
spec/datadog/core/configuration/components_spec.rb	99.85% <100.00%> (ø)
...dog/tracing/diagnostics/environment_logger_spec.rb	100.00% <100.00%> (ø)
spec/datadog/tracing/writer_spec.rb	100.00% <100.00%> (ø)

... and 2 files with indirect coverage changes

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[sarahchen6]

See #3020