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* Rootfs dir is created during container creation not during bundle
  creation
* Add support for v2
* UnmountAll is a no-op when the path to unmount (i.e. the rootfs dir)
  does not exist or is invalid

Co-authored-by: Danail Branekov <danailster@gmail.com>
Signed-off-by: Georgi Sabev <georgethebeatle@gmail.com>

runtime/v2/bundle.go

@@ -89,10 +89,6 @@ func NewBundle(ctx context.Context, root, state, id string, spec []byte) (b *Bun
 		}
 	}
 	paths = append(paths, work)
-	// create rootfs dir
-	if err := os.Mkdir(filepath.Join(b.Path, "rootfs"), 0711); err != nil {
-		return nil, err
-	}
 	// symlink workdir
 	if err := os.Symlink(work, filepath.Join(b.Path, "work")); err != nil {
 		return nil, err