Move pkg/failpoint to internal/failpoint

Signed-off-by: Derek McGowan <derek@mcg.dev>

integration/failpoint/cmd/cni-bridge-fp/main_linux.go

@@ -25,7 +25,7 @@ import (
 	"path/filepath"
 	"syscall"
 
-	"github.com/containerd/containerd/v2/pkg/failpoint"
+	"github.com/containerd/containerd/v2/internal/failpoint"
 	"github.com/containerd/continuity"
 	"github.com/containernetworking/cni/pkg/invoke"
 	"github.com/containernetworking/cni/pkg/skel"

integration/failpoint/cmd/containerd-shim-runc-fp-v1/plugin_linux.go

@@ -25,7 +25,7 @@ import (
 
 	taskapi "github.com/containerd/containerd/v2/api/runtime/task/v3"
 	"github.com/containerd/containerd/v2/cmd/containerd-shim-runc-v2/task"
-	"github.com/containerd/containerd/v2/pkg/failpoint"
+	"github.com/containerd/containerd/v2/internal/failpoint"
 	"github.com/containerd/containerd/v2/pkg/oci"
 	"github.com/containerd/containerd/v2/pkg/shutdown"
 	"github.com/containerd/containerd/v2/plugins"

integration/sandbox_run_rollback_test.go

@@ -35,8 +35,8 @@ import (
 	"github.com/stretchr/testify/require"
 	criapiv1 "k8s.io/cri-api/pkg/apis/runtime/v1"
 
+	"github.com/containerd/containerd/v2/internal/failpoint"
 	"github.com/containerd/containerd/v2/pkg/cri/server/base"
-	"github.com/containerd/containerd/v2/pkg/failpoint"
 )
 
 const (