update vendor

Signed-off-by: Roland.Ma <rolandma@yunify.com>

vendor/github.com/deislabs/oras/pkg/content/consts.go

@@ -0,0 +1,28 @@
+package content
+
+import ocispec "github.com/opencontainers/image-spec/specs-go/v1"
+
+const (
+	// DefaultBlobMediaType specifies the default blob media type
+	DefaultBlobMediaType = ocispec.MediaTypeImageLayer
+	// DefaultBlobDirMediaType specifies the default blob directory media type
+	DefaultBlobDirMediaType = ocispec.MediaTypeImageLayerGzip
+)
+
+const (
+	// TempFilePattern specifies the pattern to create temporary files
+	TempFilePattern = "oras"
+)
+
+const (
+	// AnnotationDigest is the annotation key for the digest of the uncompressed content
+	AnnotationDigest = "io.deis.oras.content.digest"
+	// AnnotationUnpack is the annotation key for indication of unpacking
+	AnnotationUnpack = "io.deis.oras.content.unpack"
+)
+
+const (
+	// OCIImageIndexFile is the file name of the index from the OCI Image Layout Specification
+	// Reference: https://github.com/opencontainers/image-spec/blob/master/image-layout.md#indexjson-file
+	OCIImageIndexFile = "index.json"
+)