Change s3 input name to aws-s3

[kaiyan-sheng]

What does this PR do?

NOTE: This PR should wait till 7.12.0 release before merging.

This PR is to change s3 input name to aws-s3 in order to match the renaming we did in Filebeat.
Since the PR in Beats merged for 7.12, this only works when testing with:

elastic-package stack up --version 7.12.0-SNAPSHOT -v -d

Checklist

• I have reviewed tips for building integrations and this pull request is aligned with them.
• I have verified that all data streams collect metrics or logs.

[elasticmachine]

Pinging @elastic/integrations (Team:Integrations)

[elasticmachine]

💚 Build Succeeded

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Build stats

• Build Cause: Branch indexing

• Start Time: 2021-04-28T22:28:18.513+0000

• Duration: 33 min 38 sec

• Commit: 8b2a16e

Test stats 🧪

Test	Results
Failed	0
Passed	1966
Skipped	3
Total	1969

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[kaiyan-sheng]

@mtojek This only works with filebeat 7.12 so should I wait till after 7.12 get released before merging this? TIA!

[mtojek]

The 7.12 stack has been merged, feel free to rebase this branch against master.

BTW you can think also about system tests for the AWS integration as it's also available (not necessary as part of this PR).

[kaiyan-sheng]

@mtojek Yeah I will create a separate PR (hopefully soon) for system tests!! Thanks!

[mtojek]

The build is failing due to this: elastic/beats#24198 . If it's not an urgent issue I would wait for the correct Docker images.

[mtojek]

If the CI is happy, I'm happy too :)