Add Access Entries from EKS in Kubernetes Module

[shyammukund]

Title: *We are potentially missing coverage of many Kubernetes Users and Groups by not processing access entries from EKS. Right now we are just getting Users from the aws-auth-config-map and the RoleBindings and ClusterRole bindings. Processing Access Entries will allow us to get users and groups that aren't in the other 2 sources. *

Description:

• Access Entries live outside the cluster in EKS. Example of the json object that the AWS API returns for Access Entries

• "accessEntry": {
    "clusterName": "eks-customer",
    "principalArn": "arn:aws:iam::111122223333:user/eks-admin-user",
    "kubernetesGroups": [],
    "accessEntryArn": "arn:aws:eks:us-west-2:111122223333:access-entry/eks-customer/user/111122223333/eks-admin-user/0acb1bc6-cb0a-ede6-11ae-a6506e3d36p0",
    "createdAt": "2025-04-14T22:45:48.097000-05:00",
    "modifiedAt": "2025-04-14T22:45:48.097000-05:00",
    "tags": {},
    "username": "arn:aws:iam::111122223333:user/eks-admin-user",
    "type": "STANDARD"
  }
  
  
  

[optional Relevant Links:]

• look at intel/kubernetes/rbac.py to see how we ingest users and groups from the role bindings and cluster role bindings
• look at intel/kubernetes/eks.py to see how we ingest users and groups from the aws-auth-map