feat: remove all ceph configuration from rke2

Remove ceph CSI storage integration from Kubernetes setup.
This removes ceph-related parameters, templates, and RBAC files.

- Remove ceph parameters from rke2 manifests
- Delete ceph CSI template files
- Delete ceph CSI RBAC configuration files
- Remove encrypted ceph key from hieradata

hieradata/roles/infra/k8s/control.eyaml

@@ -1,2 +1 @@
 ---
-rke2::csi_ceph_key: ENC[PKCS7,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]

hieradata/roles/infra/k8s/control.yaml

@@ -9,23 +9,6 @@ rke2::helm_repos:
   harbor: https://helm.goharbor.io
   traefik: https://traefik.github.io/charts
   hashicorp: https://helm.releases.hashicorp.com
-rke2::csi_ceph_enable: true
-rke2::csi_ceph_clusterid: de96a98f-3d23-465a-a899-86d3d67edab8
-rke2::csi_ceph_poolname: kubernetes
-rke2::csi_ceph_monitors:
-  - 198.18.23.9:6789
-  - 198.18.23.10:6789
-  - 198.18.23.11:6789
-  - 198.18.23.12:6789
-  - 198.18.23.13:6789
-rke2::csi_ceph_files:
-  - ceph-csi-nodeplugin-rbac
-  - ceph-csi-provisioner-rbac
-  - ceph-csi-rbdplugin-provisioner
-  - ceph-csi-rbdplugin
-rke2::csi_ceph_templates:
-  - ceph-csi-config
-  - ceph-csi-secret
 rke2::extra_config_files:
   - rke2-canal-config
   - rke2-nginx-ingress-config