Update Stability Level for CSI and Projected Volume Workspaces

This commit updates the stability level for csi and projected
volume workspaces, which have both been documented as they have
became stable according to TEP096.

docs/additional-configs.md

@@ -327,8 +327,6 @@ Features currently in "beta" are:
 | [Object Parameters and Results](pipelineruns.md#specifying-parameters) | [TEP-0075](https://github.com/tektoncd/community/blob/main/teps/0075-object-param-and-result-types.md) | | [v0.46.0](https://github.com/tektoncd/pipeline/releases/tag/v0.46.0) | | No |
 | [Remote Tasks](./taskruns.md#remote-tasks) and [Remote Pipelines](./pipelineruns.md#remote-pipelines) | [TEP-0060](https://github.com/tektoncd/community/blob/main/teps/0060-remote-resolution.md) | | [v0.41.0](https://github.com/tektoncd/pipeline/releases/tag/v0.41.0) | | No |
 | [`Provenance` field in Status](pipeline-api.md#provenance)| [issue#5550](https://github.com/tektoncd/pipeline/issues/5550)| [v0.41.0](https://github.com/tektoncd/pipeline/releases/tag/v0.41.0)| [v0.48.0](https://github.com/tektoncd/pipeline/releases/tag/v0.48.0) | `enable-provenance-in-status`| No |
-| [CSI workspaces](workspaces.md#csi)| [issue#4446](https://github.com/tektoncd/pipeline/issues/4446)| [v0.38.0](https://github.com/tektoncd/pipeline/releases/tag/v0.38.0)| [v0.41.0](https://github.com/tektoncd/pipeline/releases/tag/v0.41.0) | | No |
-| [Projected volume workspaces](workspaces.md#projected)| [issue#5075](https://github.com/tektoncd/pipeline/issues/5075)| [v0.38.0](https://github.com/tektoncd/pipeline/releases/tag/v0.38.0)| [v0.41.0](https://github.com/tektoncd/pipeline/releases/tag/v0.41.0) | | No |
 | [Isolated `Step` & `Sidecar` `Workspaces`](./workspaces.md#isolated-workspaces)                     | [TEP-0029](https://github.com/tektoncd/community/blob/main/teps/0029-step-workspaces.md)                                   | [v0.24.0](https://github.com/tektoncd/pipeline/releases/tag/v0.24.0) | [v0.50.0](https://github.com/tektoncd/pipeline/releases/tag/v0.50.0) | | Yes |
 
 ## Enabling larger results using sidecar logs

pkg/apis/pipeline/v1/workspace_validation.go

@@ -19,8 +19,6 @@ package v1
 import (
 	"context"
 
-	"github.com/tektoncd/pipeline/pkg/apis/config"
-	"github.com/tektoncd/pipeline/pkg/apis/version"
 	"k8s.io/apimachinery/pkg/api/equality"
 	"knative.dev/pkg/apis"
 )
@@ -68,25 +66,15 @@ func (b *WorkspaceBinding) Validate(ctx context.Context) (errs *apis.FieldError)
 		return apis.ErrMissingField("secret.secretName")
 	}
 
-	// The projected workspace is only supported when the beta feature gate is enabled.
 	// For a Projected volume to work, you must provide at least one source.
 	if b.Projected != nil && len(b.Projected.Sources) == 0 {
-		errs := version.ValidateEnabledAPIFields(ctx, "projected workspace type", config.BetaAPIFields).ViaField("workspaces")
-		if errs != nil {
-			return errs
-		}
 		if len(b.Projected.Sources) == 0 {
 			return apis.ErrMissingField("projected.sources")
 		}
 	}
 
-	// The csi workspace is only supported when the beta feature gate is enabled.
 	// For a CSI to work, you must provide and have installed the driver to use.
 	if b.CSI != nil {
-		errs := version.ValidateEnabledAPIFields(ctx, "csi workspace type", config.BetaAPIFields).ViaField("workspaces")
-		if errs != nil {
-			return errs
-		}
 		if b.CSI.Driver == "" {
 			return apis.ErrMissingField("csi.driver")
 		}

pkg/apis/pipeline/v1/workspace_validation_test.go

@@ -102,7 +102,6 @@ func TestWorkspaceBindingValidateValid(t *testing.T) {
 				}},
 			},
 		},
-		wc: config.EnableBetaAPIFields,
 	}, {
 		name: "Valid csi",
 		binding: &v1.WorkspaceBinding{
@@ -111,7 +110,6 @@ func TestWorkspaceBindingValidateValid(t *testing.T) {
 				Driver: "my-csi",
 			},
 		},
-		wc: config.EnableBetaAPIFields,
 	}} {
 		t.Run(tc.name, func(t *testing.T) {
 			ctx := context.Background()
@@ -165,28 +163,13 @@ func TestWorkspaceBindingValidateInvalid(t *testing.T) {
 			Name:   "beth",
 			Secret: &corev1.SecretVolumeSource{},
 		},
-	}, {
-		name: "projected workspace should be disallowed without beta feature gate",
-		binding: &v1.WorkspaceBinding{
-			Name:      "beth",
-			Projected: &corev1.ProjectedVolumeSource{},
-		},
 	}, {
 		name: "Provide projected without sources",
 		binding: &v1.WorkspaceBinding{
 			Name:      "beth",
 			Projected: &corev1.ProjectedVolumeSource{},
 		},
 		wc: config.EnableBetaAPIFields,
-	}, {
-		name: "csi workspace should be disallowed without beta feature gate",
-		binding: &v1.WorkspaceBinding{
-			Name: "beth",
-			CSI: &corev1.CSIVolumeSource{
-				Driver: "csi-driver",
-			},
-		},
-		wc: config.EnableStableAPIFields,
 	}, {
 		name: "Provide csi without a driver",
 		binding: &v1.WorkspaceBinding{