[exporter/azureblob] Add an option to azureblob exporter to use UTC in blob names

[cruscio]

Description

Add a parameter use_utc to the azureblob exporter to use UTC, instead of local time, in blob names. Defaults to false - no change to default behavior when undefined.

Link to tracking issue

Fixes #43752

Testing

Included a new test function TestGenerateBlobNameUseUTC in azureblob/exporter_test.go

Documentation

Added the parameter specification to the exporter's README:

  - use_utc (default `false`): Use UTC time in blob name format.

[linux-foundation-easycla[bot]]

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• :white_check_mark: login: ChrsMark / name: Christos Markou (32d308ebe023f61f1e67c87cbdec98db8c7a6084)

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[github-actions[bot]]

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

[cruscio]

Hey @MovieStoreGuy & @hgaol - could you take a look at this. It's a pretty small change. (commenting to clear stalebot)

[hgaol]

Hi @cruscio , instead of only supportingUTC time, I think timezone or offset is more flexible.

[cruscio]

@hgaol - that works for me. I was trying to keep it simple at the start. Happy to expand on the concept to make it more flexible.

[cruscio]

Hey @MovieStoreGuy looks like this is waiting for your review too. Any chance you coul take a quick look and let me know if I'm missing anything? Thanks!

[github-actions[bot]]

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

[cruscio]

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

Hey @MovieStoreGuy @hgaol - I'm a first time contributor. Is there anything here I'm missing or didn't do right?

[hgaol]

Hi @cruscio , as component owner, I mainly focus on reviewing PR. You can ping approvers or maintainers to review/merge your PR. BTW, all checks should be passed before merging the PR.

[ChrsMark]

CI is failing (https://github.com/open-telemetry/opentelemetry-collector-contrib/actions/runs/20135422961/job/57791571954?pr=43753#step:9:87):

=== FAIL: . TestGenerateBlobNameTimezoneSpecificLocation (re-run 1) (0.00s)
    exporter_test.go:199: 
        	Error Trace:	/home/runner/work/opentelemetry-collector-contrib/opentelemetry-collector-contrib/exporter/azureblobexporter/exporter_test.go:199
        	Error:      	Received unexpected error:
        	            	parsing time "2006/01/02/metrics_15_04" as "2006/01/02/metrics_15_04_05.json": cannot parse "" as "_"
        	Test:       	TestGenerateBlobNameTimezoneSpecificLocation

@cruscio we will need this to be fixed

[cruscio]

Apologies. I will get that taken care of