[appmesh] implement route retry policies

[dfezzie]

App Mesh supports the configuration of Retry Policies on the route objects. These should be configurable by the customer

Use Case

Customers should be able to configure the retry policies for their routes

Proposed Solution

For each route protocol, the retry policies should be configurable

router.addRoute('test-http-route', {
  routeSpec: appmesh.RouteSpec.http({
    retryPolicy: {
        httpRetryEvents: [
            appmesh.HttpRetryEvent.ClientError,
        ],
        perRetryTimeout: aws.Duration.seconds(5),
        maxRetries: 2,
    },
    weightedTargets: [
      {
         virtualNode: node,
      },
    ],
  }),
});

Other

• 👋 I may be able to implement this feature request
• ⚠️ This feature might incur a breaking change

---

This is a 🚀 Feature Request

[github-actions]

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