Bump Envoy image version to v1.24.0.0-prod

[ytsssun]

Issue #, if available:

Description of changes:
Bump AppMesh Envoy image version from v1.22.2.1-prod to v1.24.0.0-prod
.
Ref: #621

Envoy v1.24.0 release notes: https://www.envoyproxy.io/docs/envoy/latest/version_history/v1.24/v1.24.0

Note: please monitor this aws/aws-app-mesh-roadmap#442 and make sure the v1.24.0.0 Envoy image is available in public ECR before merging this PR.

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[BennettJames]

I believe the makefile should be updated as well -

• https://github.com/aws/aws-app-mesh-controller-for-k8s/blob/master/Makefile#L12

[ytsssun]

I believe the makefile should be updated as well -

* https://github.com/aws/aws-app-mesh-controller-for-k8s/blob/master/Makefile#L12

Checked with @paulyeo21 offline, looks like that version indicates the beginning of the agent feature waitUntilProxyReady, hence should not be updated.

[suniltheta]

Better to rename that variable & add comments to avoid confusion.

[BennettJames]

Hrm, yeah I think we might need to think through this policy a bit more then. The integration tests as-is will call make integration-test, which in turn will call make helm-deploy which uses that variable. Having the integration tests not use the default-configured envoy does not seem appropriate to me.

[BennettJames]

Yeah, having thought about this a bit more, I'm pretty sure we should increment that variable. There are still ways to test older versions by setting that variable (i.e. make integration-test SIDECAR_IMAGE_TAG=v1.22.2.1-prod), but as-is it acts as a default for controller deploys. The default should be consistently set to the latest. The variable in the Makefile can be downgraded if desired by a user.

I think there's a separate value check w/in the sidecar builder that's necessary for waitUntilProxyReady. That should stay the same, but I believe the makefile needs updating.

[ytsssun]

Synced with @rakeb, I think I was wrong about the Makefile. The Makefile is only related to the Integ test. We need to include the version update. Updated the PR.