Merge pull request #54302 from sbezverk/refactor_rbd_volume

Automatic merge from submit-queue (batch tested with PRs 54229, 54380, 54302, 54454). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Refactor RBD volume

Refactor RBD Volume Persistent Volume Spec so RBD PV's SecretRef
allows referencing a secret from a persistent volume in any namespace.
This allows locating credentials for persistent volumes in namespaces
other than the one containing the PVC.
Closes #54432
```release-note
RBD Persistent Volume Sources can now reference User's Secret in namespaces other than the namespace of the bound Persistent Volume Claim
```

api/openapi-spec/swagger.json

@@ -68781,7 +68781,7 @@
      },
      "rbd": {
       "description": "RBD represents a Rados Block Device mount on the host that shares a pod's lifetime. More info: https://releases.k8s.io/HEAD/examples/volumes/rbd/README.md",
-      "$ref": "#/definitions/io.k8s.api.core.v1.RBDVolumeSource"
+      "$ref": "#/definitions/io.k8s.api.core.v1.RBDPersistentVolumeSource"
      },
      "scaleIO": {
       "description": "ScaleIO represents a ScaleIO persistent volume attached and mounted on Kubernetes nodes.",
@@ -69424,6 +69424,50 @@
      }
     }
    },
+   "io.k8s.api.core.v1.RBDPersistentVolumeSource": {
+    "description": "Represents a Rados Block Device mount that lasts the lifetime of a pod. RBD volumes support ownership management and SELinux relabeling.",
+    "required": [
+     "monitors",
+     "image"
+    ],
+    "properties": {
+     "fsType": {
+      "description": "Filesystem type of the volume that you want to mount. Tip: Ensure that the filesystem type is supported by the host operating system. Examples: \"ext4\", \"xfs\", \"ntfs\". Implicitly inferred to be \"ext4\" if unspecified. More info: https://kubernetes.io/docs/concepts/storage/volumes#rbd",
+      "type": "string"
+     },
+     "image": {
+      "description": "The rados image name. More info: https://releases.k8s.io/HEAD/examples/volumes/rbd/README.md#how-to-use-it",
+      "type": "string"
+     },
+     "keyring": {
+      "description": "Keyring is the path to key ring for RBDUser. Default is /etc/ceph/keyring. More info: https://releases.k8s.io/HEAD/examples/volumes/rbd/README.md#how-to-use-it",
+      "type": "string"
+     },
+     "monitors": {
+      "description": "A collection of Ceph monitors. More info: https://releases.k8s.io/HEAD/examples/volumes/rbd/README.md#how-to-use-it",
+      "type": "array",
+      "items": {
+       "type": "string"
+      }
+     },
+     "pool": {
+      "description": "The rados pool name. Default is rbd. More info: https://releases.k8s.io/HEAD/examples/volumes/rbd/README.md#how-to-use-it",
+      "type": "string"
+     },
+     "readOnly": {
+      "description": "ReadOnly here will force the ReadOnly setting in VolumeMounts. Defaults to false. More info: https://releases.k8s.io/HEAD/examples/volumes/rbd/README.md#how-to-use-it",
+      "type": "boolean"
+     },
+     "secretRef": {
+      "description": "SecretRef is name of the authentication secret for RBDUser. If provided overrides keyring. Default is nil. More info: https://releases.k8s.io/HEAD/examples/volumes/rbd/README.md#how-to-use-it",
+      "$ref": "#/definitions/io.k8s.api.core.v1.SecretReference"
+     },
+     "user": {
+      "description": "The rados user name. Default is admin. More info: https://releases.k8s.io/HEAD/examples/volumes/rbd/README.md#how-to-use-it",
+      "type": "string"
+     }
+    }
+   },
    "io.k8s.api.core.v1.RBDVolumeSource": {
     "description": "Represents a Rados Block Device mount that lasts the lifetime of a pod. RBD volumes support ownership management and SELinux relabeling.",
     "required": [