Bump Envoy image version to v1.16.1.0-prod

[Y0Username]

Issue #, if available:

aws/aws-app-mesh-roadmap#296
#423

Description of changes:

Bump AppMesh Envoy image version from v1.15.1.0-prod to v1.16.1.0-prod

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[fawadkhaliq]

Thanks for the PR @Y0Username

Adding Envoy v1.16.1 release notes for reference: https://www.envoyproxy.io/docs/envoy/latest/version_history/v1.16.1

In addition to the release notes, is there anything else changed in the bootstrap config (or otherwise) for the App Mesh packaged Envoy image? If yes, please consider adding a summary of changes in the PR description

Also, I see v1.16.0 [1] has several changes. Are there any changes that impact the App Mesh envoy config [2] in terms of behavior or incompatibility? It'll be good to confirm that envoy config params [2] and their behavior have validated against v1.16.1.

[1] https://www.envoyproxy.io/docs/envoy/latest/version_history/v1.16.0
[2] https://docs.aws.amazon.com/app-mesh/latest/userguide/envoy.html#envoy-config

[Y0Username]

Thanks for adding the release notes @fawadkhaliq

There are couple of things that have been added to the bootstrap config, we will update our documentation shortly to reflect the following changes:

• Support for Jaeger tracing
• Support to configure initial-fetch-timeout

Most of the config params are validated by our integ tests. Also we ensure that the valid configs are generated through our unit tests.

[fawadkhaliq]

Thanks for adding the release notes @fawadkhaliq

There are couple of things that have been added to the bootstrap config, we will update our documentation shortly to reflect the following changes:

• Support for Jaeger tracing
• Support to configure initial-fetch-timeout

Most of the config params are validated by our integ tests. Also we ensure that the valid configs are generated through our unit tests.

Thanks! we'll roll this out as part of 1.3.0