Cherry-pick #26117 to 7.x: Migrate sqs metricset to use cloudwatch input as light weight module

[kaiyan-sheng]

Cherry-pick of PR #26117 to 7.x branch. Original message:

What does this PR do?

This PR is to migrate sqs metricset to use cloudwatch input as light weight module. Two main parts in this PR:

In the original sqs metricset, we are also making SQS ListQueues API call to get metadata for each SQS instance. This is added as a part of cloudwatch metricset now.
You can see under sqs metricset, there is only a manifest.yml file which defines cloudwatch as the input.

We need to keep backward compatibility with metric names so the dashboard can still be used.
You can see rename processor is used in manifest.yml file under rds metricset to make sure with this PR we are not introducing breaking changes. Also please check the updated data.json file in sqs metricset to see the renaming is effective.

Why is it important?

With this change, we no longer need to maintain the common code in both sqs metricset and cloudwatch metricset.

Checklist

• My code follows the style guidelines of this project
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have made corresponding change to the default configuration files
• I have added tests that prove my fix is effective or that my feature works
• I have added an entry in CHANGELOG.next.asciidoc or CHANGELOG-developer.next.asciidoc.

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• Build Cause: Pull request #26139 opened

• Start Time: 2021-06-03T20:09:03.333+0000

• Duration: 110 min 47 sec

• Commit: a53c729

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Failed	0
Passed	8810
Skipped	2395
Total	11205

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Test stats 🧪

Test	Results
Failed	0
Passed	8810
Skipped	2395
Total	11205