feat: Upcoming Ec2 keep legacy metadata configuration option details

[ismahernandez]

Update from @zuluecho9: This will go live sometime soon after October 26 and when it does, we want to update the doc w/ the new date.

Hello! Ismael here from the Beyond team. This is some documentation for a soon to be live new option in the EC2 Integration configuration panel. Feedback/changes welcome if you have them.
Talk to me in slack @ ihernandez

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[github-actions]

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[zuluecho9]

Some details from SME:

To learn more about this, search in atlassian for 'Duplicated EC2 metadata and tags' and you'll find a description of the problem and fix.

Summary of issue:

"We are gonna be adding a toggle button under infrastructure - aws - ec2 - configure. It is gonna be called keep legacy metadata format, should be live in staging at least for the frontend and we are planning to release this tomorrow or the day after. We are planning on keeping this for the time being because some customers use these legacy tag and attribute names and don't want to break them. It is possible this setting could be removed in the future and instead use aliases through shimming. Let me explain a lil better what they are.
We've had for a long time duplicate data under the ec2 metrics for the computesample data type. So ec2 custom tags and some attributes were present with thr same value under different keys.

These consume bandwidth, the same value duplicated 3 times with different names, and we have decided to remove them. For current customers they will be keeping these as is but they will be able to turn that off and only keep the values that are not legacy. New integrations will be having that value off, even for old customers."

[x8a]

👏🏻