Improve cce_addon_v3 documentation

[dombisza]

Summary of the Pull Request

hello there,

I tried to improve the documentation of cce_addon_v3 so users have an example how to use data sources instead of hardcoded strings and versions.

proof that it works:

Terraform will perform the following actions:

  # opentelekomcloud_cce_addon_v3.autoscaler will be created
  + resource "opentelekomcloud_cce_addon_v3" "autoscaler" {
      + cluster_id       = "DELETED"
      + description      = (known after apply)
      + id               = (known after apply)
      + name             = (known after apply)
      + template_name    = "autoscaler"
      + template_version = "1.25.21"

      + values {
          + basic  = {
              + "cceEndpoint" = "https://cce.eu-de.otc.t-systems.com"
              + "ecsEndpoint" = "https://ecs.eu-de.otc.t-systems.com"
              + "region"      = "eu-de"
              + "swr_addr"    = "100.125.7.25:20202"
              + "swr_user"    = "cce-addons"
            }
          + custom = {
              + "cluster_id"                     = "DELETED"
              + "coresTotal"                     = "32000"
              + "expander"                       = "priority"
              + "logLevel"                       = "4"
              + "maxEmptyBulkDeleteFlag"         = "10"
              + "maxNodeProvisionTime"           = "15"
              + "maxNodesTotal"                  = "1000"
              + "memoryTotal"                    = "128000"
              + "scaleDownDelayAfterAdd"         = "10"
              + "scaleDownDelayAfterDelete"      = "11"
              + "scaleDownDelayAfterFailure"     = "3"
              + "scaleDownEnabled"               = "true"
              + "scaleDownUnneededTime"          = "10"
              + "scaleDownUtilizationThreshold"  = "0.5"
              + "scaleUpCpuUtilizationThreshold" = "1"
              + "scaleUpMemUtilizationThreshold" = "1"
              + "scaleUpUnscheduledPodEnabled"   = "true"
              + "scaleUpUtilizationEnabled"      = "true"
              + "tenant_id"                      = "DELETED"
              + "unremovableNodeRecheckTimeout"  = "5"
            }
          + flavor = jsonencode(
                {
                  + description = "Has only one instance"
                  + name        = "Single"
                  + replicas    = 1
                  + resources   = [
                      + {
                          + limitsCpu   = "1000m"
                          + limitsMem   = "1000Mi"
                          + name        = "autoscaler"
                          + requestsCpu = "500m"
                          + requestsMem = "500Mi"
                        },
                    ]
                }
            )
        }
    }

Plan: 1 to add, 0 to change, 0 to destroy.

Do you want to perform these actions?
  Terraform will perform the actions described above.
  Only 'yes' will be accepted to approve.

  Enter a value: yes

opentelekomcloud_cce_addon_v3.autoscaler: Creating...
opentelekomcloud_cce_addon_v3.autoscaler: Still creating... [10s elapsed]
opentelekomcloud_cce_addon_v3.autoscaler: Creation complete after 12s [id=a630c413-c98f-11ee-aaeb-02550a10003c]

Apply complete! Resources: 1 added, 0 changed, 0 destroyed.

PR Checklist

• Refers to: #xxx
• Tests added/passed.
• Documentation updated.
• Schema updated.
• Release notes added.

Acceptance Steps Performed

=== RUN   TestAccSomethingV0_basic
--- PASS: TestAccSomethingV0_basic (101.71s)
=== RUN   TestAccSomethingV0_timeout
--- PASS: TestAccSomethingV0_timeout (128.67s)
PASS

Process finished with exit code 0

[otc-zuul]

Build succeeded.
https://zuul.otc-service.com/t/eco/buildset/8e130292b6da4ccdb5d7691680592bb9

✔️ build-otc-releasenotes SUCCESS in 5m 18s
✔️ noop SUCCESS in 0s
✔️ otc-golangci-lint SUCCESS in 3m 02s
✔️ golang-make-test SUCCESS in 4m 24s
✔️ golang-make-vet SUCCESS in 3m 45s
✔️ tflint SUCCESS in 2m 47s
✔️ goreleaser-build SUCCESS in 6m 54s
✔️ otc-terraform-visualize-main SUCCESS in 6m 23s