Add ELB and ECR image to the EKS cluster deployment

[uri-weisman]

Motivation Currently, we don't have visibility on whether we generate findings for the AWS-related fetchers (ELB/ECR) in the cis_eks benchmark. When our terraform deployment creates the EKS cluster, it does not configure a Load balancer, and the agent image is not pulled from ECR, as a result, findings for ELB and ECR are not being generated. For example, our long-running env doesn't produce those findings and might cause us to miss degradations in those areas.

Definition of done As part of our terraform deployment:

• [ ] Push an updated image of the agent to a public ECR.
• [ ] Create the EKS cluster with an LB