use admin client instead of backend directly

lib/web/usertasks_test.go

@@ -31,6 +31,7 @@ import (
 	usertasksv1 "github.com/gravitational/teleport/api/gen/proto/go/teleport/usertasks/v1"
 	"github.com/gravitational/teleport/api/types"
 	"github.com/gravitational/teleport/api/types/usertasks"
+	"github.com/gravitational/teleport/lib/auth"
 	"github.com/gravitational/teleport/lib/services"
 	"github.com/gravitational/teleport/lib/web/ui"
 )
@@ -53,6 +54,8 @@ func TestUserTask(t *testing.T) {
 		})
 	require.NoError(t, err)
 	pack := env.proxies[0].authPack(t, userWithRW, []types.Role{roleRWUserTask})
+	adminClient, err := env.server.NewClient(auth.TestAdmin())
+	require.NoError(t, err)
 
 	getAllEndpoint := pack.clt.Endpoint("webapi", "sites", clusterName, "usertask")
 	singleItemEndpoint := func(name string) string {
@@ -90,7 +93,7 @@ func TestUserTask(t *testing.T) {
 		})
 		require.NoError(t, err)
 
-		_, err = env.proxies[0].auth.Auth().CreateUserTask(ctx, userTask)
+		_, err = adminClient.UserTasksServiceClient().CreateUserTask(ctx, userTask)
 		require.NoError(t, err)
 		userTaskForTest = userTask
 	}