feat: Add Amazon Managed service for Prometheus controller support

[pdemagny]

What does this PR do?

Hello !
This PR adds support for the Amazon Managed service for Prometheus GA controller for ACK. Thus allowing the creation of AMP resources (AlertManagerDefinition, RuleGroupsNamespace, Workspace) with ACK.

Motivation

I needed to test the AMP integration with KubeCost on EKS, all of this with the terraform-aws-eks-blueprints.
I saw this great and helpful repository existed but lacked support for AMP, so I thought about contributing it ;)

• Resolves Add ACK Amazon Managed service for Prometheus controller #27

Test Results

I created an EKS cluster with the terraform-aws-eks-blueprints and with the ACK AMP controller installed with my fork:

module "eks_blueprints_ack_addons" {
  source = "github.com/pdemagny/terraform-aws-eks-ack-addons?ref=feat-amp-support"

  cluster_id = module.eks_blueprints.eks_cluster_id
  # Wait for data plane to be ready
  data_plane_wait_arn = module.eks_blueprints.managed_node_group_arn[0]

  enable_api_gatewayv2 = false
  enable_dynamodb      = false
  enable_s3            = false
  enable_rds           = false
  enable_amp           = true

  tags = local.tags
}

Which produces a working installation of the controller:

❯ k get pods -n ack-amp
NAME                       READY   STATUS    RESTARTS   AGE
ack-amp-5fdc849b48-j4nsc   1/1     Running   0          91m

I also created an AMP Workspace in my AWS account:

apiVersion: prometheusservice.services.k8s.aws/v1alpha1
kind: Workspace
metadata:
  name: "ack-amp-test-workspace"
spec:
  alias: "ack-amp-test-workspace"

❯ k logs -n ack-amp ack-amp-5fdc849b48-j4nsc
...
2022-11-20T16:57:36.835Z	INFO	ackrt	created new resource	{"account": "<REDACTED>", "role": "", "region": "eu-west-1", "kind": "Workspace", "namespace": "default", "name": "ack-amp-test-workspace", "is_adopted": false, "generation": 1}
2022-11-20T17:00:07.533Z	INFO	ackrt	deleted resource	{"account": "<REDACTED>", "role": "", "region": "eu-west-1", "kind": "Workspace", "namespace": "default", "name": "ack-amp-test-workspace", "generation": 2}

❯ k describe workspaces.prometheusservice.services.k8s.aws -n default
Name:         ack-amp-test-workspace
Namespace:    default
Labels:       <none>
Annotations:  <none>
API Version:  prometheusservice.services.k8s.aws/v1alpha1
Kind:         Workspace
Metadata:
  Creation Timestamp:  2022-11-20T16:57:36Z
  Finalizers:
    finalizers.prometheusservice.services.k8s.aws/Workspace
  Generation:  1
  Managed Fields:
    API Version:  prometheusservice.services.k8s.aws/v1alpha1
    Fields Type:  FieldsV1
    fieldsV1:
      f:metadata:
        f:finalizers:
          .:
          v:"finalizers.prometheusservice.services.k8s.aws/Workspace":
    Manager:      controller
    Operation:    Update
    Time:         2022-11-20T16:57:36Z
    API Version:  prometheusservice.services.k8s.aws/v1alpha1
    Fields Type:  FieldsV1
    fieldsV1:
      f:status:
        .:
        f:ackResourceMetadata:
          .:
          f:arn:
          f:ownerAccountID:
          f:region:
        f:conditions:
        f:status:
          .:
          f:statusCode:
        f:workspaceID:
    Manager:      controller
    Operation:    Update
    Subresource:  status
    Time:         2022-11-20T16:57:36Z
    API Version:  prometheusservice.services.k8s.aws/v1alpha1
    Fields Type:  FieldsV1
    fieldsV1:
      f:metadata:
        f:annotations:
          .:
          f:kubectl.kubernetes.io/last-applied-configuration:
      f:spec:
        .:
        f:alias:
    Manager:         kubectl-client-side-apply
    Operation:       Update
    Time:            2022-11-20T16:57:36Z
  Resource Version:  31692
  UID:               0a3ac219-fc52-4268-83ae-1bd52a04cecd
Spec:
  Alias:  ack-amp-test-workspace
Status:
  Ack Resource Metadata:
    Arn:               arn:aws:aps:eu-west-1:<REDACTED>:workspace/ws-<REDACTED>
    Owner Account ID:  <REDACTED>
    Region:            eu-west-1
  Conditions:
    Last Transition Time:  2022-11-20T16:58:06Z
    Message:               Resource synced successfully
    Reason:                
    Status:                True
    Type:                  ACK.ResourceSynced
  Status:
    Status Code:  ACTIVE
  Workspace ID:   ws-<REDACTED>
Events:           <none>

Additional Notes

❯ pre-commit run -a
Terraform fmt............................................................Passed
Terraform docs...........................................................Passed
Terraform validate with tflint...........................................Passed
Terraform validate.......................................................Passed
check for merge conflicts................................................Passed
fix end of files.........................................................Passed

[askulkarni2]

@pdemagny thanks for the contribution!