Add GetSpanPath and SpanExists

[Yicheng-Lu-llll]

TL;DR

This is part of Flytekit Metrics Exploration.

This PR helps propeller to get span uri(highlighted in green).

Flytekit Metrics Exploration includes:

• flytekit: Upload Flytekit runtime metrics to S3 flytekit#1683

• flyteplugins: Add GetSpanPath and SpanExists #361

• flyteidl: Add span uri flyteidl#415

• flytepropeller: Add span uri to node event flytepropeller#577

• flyteadmin: Implement GetFlyteKitMetrics endpoint flyteadmin#575

[welcome]

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[pingsutw]

Could we add a new function called NewInMemoryOutputReaderWithSpan? Spotify is using this function internally, so we can't change it. #268 (comment)

[codecov]

Codecov Report

Merging #361 (cb694b8) into master (2a7a6f9) will increase coverage by 1.38%.
The diff coverage is 84.84%.

❗ Current head cb694b8 differs from pull request most recent head a70022d. Consider uploading reports for the commit a70022d to get more accurate results

@@            Coverage Diff             @@
##           master     #361      +/-   ##
==========================================
+ Coverage   62.62%   64.00%   +1.38%     
==========================================
  Files         152      152              
  Lines       12789    10388    -2401     
==========================================
- Hits         8009     6649    -1360     
+ Misses       4168     3126    -1042     
- Partials      612      613       +1     

Flag	Coverage Δ
unittests	?

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

Impacted Files	Coverage Δ
go/tasks/pluginmachinery/ioutils/paths.go	84.61% <ø> (+4.61%)	⬆️
go/tasks/plugins/array/awsbatch/monitor.go	68.31% <0.00%> (+0.89%)	⬆️
go/tasks/plugins/array/k8s/management.go	57.21% <0.00%> (-1.12%)	⬇️
go/tasks/plugins/k8s/sagemaker/builtin_training.go	72.00% <0.00%> (+4.99%)	⬆️
...sks/plugins/k8s/sagemaker/hyperparameter_tuning.go	60.45% <0.00%> (+5.24%)	⬆️
go/tasks/plugins/presto/execution_state.go	50.65% <0.00%> (+0.65%)	⬆️
...pluginmachinery/ioutils/in_memory_output_reader.go	63.63% <50.00%> (-4.55%)	⬇️
go/tasks/plugins/array/outputs.go	73.29% <50.00%> (+2.73%)	⬆️
...uginmachinery/ioutils/remote_file_output_reader.go	22.50% <60.00%> (+2.50%)	⬆️
go/tasks/logs/logging_utils.go	90.00% <100.00%> (+2.50%)	⬆️
... and 7 more

... and 116 files with indirect coverage changes

[eapolinario]

Hi, we are moving all Flyte development to a monorepo. In order to help the transition period, we're moving open PRs to monorepo automatically and your PR was moved to flyteorg/flyte#4128. Notice that if there are any conflicts in the resulting PR they most likely happen due to the change in the import path of the flyte components.