[Resources.Container] Add Kubernetes support

[joegoldman2]

Fixes #1562.
Only tested manually at the moment.

For significant contributions please make sure you have completed the following items:

• Appropriate CHANGELOG.md updated for non-trivial changes
• Design discussion issue #
• Changes in public API reviewed

[codecov]

Codecov Report

Attention: Patch coverage is 49.42529% with 44 lines in your changes missing coverage. Please review.

Project coverage is 71.52%. Comparing base (71655ce) to head (1f7d8f5).
Report is 539 commits behind head on main.

Files with missing lines	Patch %	Lines
...elemetry.Resources.Container/K8sMetadataFetcher.cs	0.00%	20 Missing ⚠️
...Telemetry.Resources.Container/ContainerDetector.cs	73.46%	13 Missing ⚠️
...esources.Container/ContainerResourceEventSource.cs	21.42%	11 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1699      +/-   ##
==========================================
- Coverage   73.91%   71.52%   -2.39%     
==========================================
  Files         267      354      +87     
  Lines        9615    13709    +4094     
==========================================
+ Hits         7107     9806    +2699     
- Misses       2508     3903    +1395     

Flag	Coverage Δ
unittests-Contrib.Shared.Tests	87.58% <ø> (?)
unittests-Exporter.Geneva	58.60% <ø> (?)
unittests-Exporter.InfluxDB	95.88% <ø> (?)
unittests-Exporter.Instana	71.24% <ø> (?)
unittests-Exporter.OneCollector	94.34% <ø> (?)
unittests-Exporter.Stackdriver	75.73% <ø> (?)
unittests-Extensions	88.63% <ø> (?)
unittests-Extensions.Enrichment	100.00% <ø> (?)
unittests-Instrumentation.AWS	85.89% <ø> (?)
unittests-Instrumentation.AspNet	76.73% <ø> (?)
unittests-Instrumentation.AspNetCore	70.06% <ø> (?)
unittests-Instrumentation.ConfluentKafka	14.12% <ø> (?)
unittests-Instrumentation.ElasticsearchClient	79.87% <ø> (?)
unittests-Instrumentation.EntityFrameworkCore	55.49% <ø> (?)
unittests-Instrumentation.EventCounters	76.36% <ø> (?)
unittests-Instrumentation.GrpcNetClient	79.61% <ø> (?)
unittests-Instrumentation.Hangfire	93.58% <ø> (?)
unittests-Instrumentation.Http	73.57% <ø> (?)
unittests-Instrumentation.Owin	85.97% <ø> (?)
unittests-Instrumentation.Process	100.00% <ø> (?)
unittests-Instrumentation.Quartz	78.94% <ø> (?)
unittests-Instrumentation.Runtime	97.53% <ø> (?)
unittests-Instrumentation.SqlClient	90.55% <ø> (?)
unittests-Instrumentation.StackExchangeRedis	69.92% <ø> (?)
unittests-Instrumentation.Wcf	78.47% <ø> (?)
unittests-PersistentStorage	65.78% <ø> (?)
unittests-Resources.AWS	74.40% <ø> (?)
unittests-Resources.Azure	83.89% <ø> (?)
unittests-Resources.Container	57.72% <49.42%> (?)
unittests-Resources.Gcp	72.54% <ø> (?)
unittests-Resources.Host	73.94% <ø> (?)
unittests-Resources.OperatingSystem	77.20% <ø> (?)
unittests-Resources.Process	100.00% <ø> (?)
unittests-Resources.ProcessRuntime	77.08% <ø> (?)
unittests-Sampler.AWS	87.74% <ø> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
...y.Resources.Container/Models/K8sContainerStatus.cs	100.00% <100.00%> (ø)
...OpenTelemetry.Resources.Container/Models/K8sPod.cs	100.00% <100.00%> (ø)
...lemetry.Resources.Container/Models/K8sPodStatus.cs	100.00% <100.00%> (ø)
...esources.Container/ContainerResourceEventSource.cs	21.42% <21.42%> (ø)
...Telemetry.Resources.Container/ContainerDetector.cs	75.94% <73.46%> (ø)
...elemetry.Resources.Container/K8sMetadataFetcher.cs	0.00% <0.00%> (ø)

... and 369 files with indirect coverage changes

[github-actions]

This PR was marked stale due to lack of activity. It will be closed in 7 days.

[iskiselev]

Not stale. I'll try to finish review this week.

[github-actions]

This PR was marked stale due to lack of activity. It will be closed in 7 days.

[github-actions]

This PR was marked stale due to lack of activity. It will be closed in 7 days.