CSI: add missing plugin capabilities to api response

Detection of the full set of plugin capabilities was added in Nomad
1.1 for the volume creation workflow, but these were not added to the
API response for plugins.

api/nodes.go

@@ -621,19 +621,70 @@ type CSITopology struct {
 // CSINodeInfo is the fingerprinted data from a CSI Plugin that is specific to
 // the Node API.
 type CSINodeInfo struct {
-	ID                      string
-	MaxVolumes              int64
-	AccessibleTopology      *CSITopology
+	ID                 string
+	MaxVolumes         int64
+	AccessibleTopology *CSITopology
+
+	// RequiresNodeStageVolume indicates whether the client should Stage/Unstage
+	// volumes on this node.
 	RequiresNodeStageVolume bool
+
+	// SupportsStats indicates plugin support for GET_VOLUME_STATS
+	SupportsStats bool
+
+	// SupportsExpand indicates plugin support for EXPAND_VOLUME
+	SupportsExpand bool
+
+	// SupportsCondition indicates plugin support for VOLUME_CONDITION
+	SupportsCondition bool
 }
 
 // CSIControllerInfo is the fingerprinted data from a CSI Plugin that is specific to
 // the Controller API.
 type CSIControllerInfo struct {
-	SupportsReadOnlyAttach           bool
-	SupportsAttachDetach             bool
-	SupportsListVolumes              bool
+	// SupportsCreateDelete indicates plugin support for CREATE_DELETE_VOLUME
+	SupportsCreateDelete bool
+
+	// SupportsPublishVolume is true when the controller implements the
+	// methods required to attach and detach volumes. If this is false Nomad
+	// should skip the controller attachment flow.
+	SupportsAttachDetach bool
+
+	// SupportsListVolumes is true when the controller implements the
+	// ListVolumes RPC. NOTE: This does not guarantee that attached nodes will
+	// be returned unless SupportsListVolumesAttachedNodes is also true.
+	SupportsListVolumes bool
+
+	// SupportsGetCapacity indicates plugin support for GET_CAPACITY
+	SupportsGetCapacity bool
+
+	// SupportsCreateDeleteSnapshot indicates plugin support for
+	// CREATE_DELETE_SNAPSHOT
+	SupportsCreateDeleteSnapshot bool
+
+	// SupportsListSnapshots indicates plugin support for LIST_SNAPSHOTS
+	SupportsListSnapshots bool
+
+	// SupportsClone indicates plugin support for CLONE_VOLUME
+	SupportsClone bool
+
+	// SupportsReadOnlyAttach is set to true when the controller returns the
+	// ATTACH_READONLY capability.
+	SupportsReadOnlyAttach bool
+
+	// SupportsExpand indicates plugin support for EXPAND_VOLUME
+	SupportsExpand bool
+
+	// SupportsListVolumesAttachedNodes indicates whether the plugin will
+	// return attached nodes data when making ListVolume RPCs (plugin support
+	// for LIST_VOLUMES_PUBLISHED_NODES)
 	SupportsListVolumesAttachedNodes bool
+
+	// SupportsCondition indicates plugin support for VOLUME_CONDITION
+	SupportsCondition bool
+
+	// SupportsGet indicates plugin support for GET_VOLUME
+	SupportsGet bool
 }
 
 // CSIInfo is the current state of a single CSI Plugin. This is updated regularly