Merging AgentMetrics branch into dev

[yhlee-aws]

Summary

Merging AgentMetrics branch into dev

Implementation details

dev branch has been rebased into AgentMetrics branch.

Testing

• Builds on Linux (make release)
• Builds on Windows (go build -out amazon-ecs-agent.exe ./agent)
• Unit tests on Linux (make test) pass
• Unit tests on Windows (go test -timeout=25s ./agent/...) pass
• Integration tests on Linux (make run-integ-tests) pass
• Integration tests on Windows (.\scripts\run-integ-tests.ps1) pass
• Functional tests on Linux (make run-functional-tests) pass
• Functional tests on Windows (.\scripts\run-functional-tests.ps1) pass

New tests cover the changes: Yes

Description for the changelog

Licensing

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[petderek]

Did you have to make any additional changes?

[yhlee-aws]

this is what Kar had left, as-is.

[petderek]

⛵

[pecigonzalo]

Is there a document of the exposed metrics?

[pecigonzalo]

Sorry to @ you guys, but this questions has been open for a while. @petderek @yunhee-l @yumex93

[yhlee-aws]

Is there a document of the exposed metrics?

Hi @pecigonzalo,
This is not a feature that's been designed as customer facing, and hence there are no public documents on exposed metrics.