Plugins: Replace CDN class with FS CDN type (#113968)

replace cdn class with fs type

apps/plugins/pkg/app/install/registrar.go

@@ -23,7 +23,6 @@ type Class = string
 const (
 	ClassCore     Class = "core"
 	ClassExternal Class = "external"
-	ClassCDN      Class = "cdn"
 )
 
 type Source = string

apps/plugins/pkg/app/install/registrar_test.go

@@ -446,19 +446,6 @@ func TestPluginInstall_ToPluginInstallV0Alpha1(t *testing.T) {
 				require.Equal(t, pluginsv0alpha1.PluginSpecClass(ClassCore), p.Spec.Class)
 			},
 		},
-		{
-			name: "cdn class is mapped correctly",
-			install: PluginInstall{
-				ID:      "plugin-cdn",
-				Version: "3.0.0",
-				Class:   ClassCDN,
-				Source:  SourcePluginStore,
-			},
-			namespace: "org-3",
-			validate: func(t *testing.T, p *pluginsv0alpha1.Plugin) {
-				require.Equal(t, pluginsv0alpha1.PluginSpecClass(ClassCDN), p.Spec.Class)
-			},
-		},
 		{
 			name: "source annotation is set correctly",
 			install: PluginInstall{