Update vendor

vendor/github.com/mitchellh/hashstructure/v2/include.go

@@ -0,0 +1,22 @@
+package hashstructure
+
+// Includable is an interface that can optionally be implemented by
+// a struct. It will be called for each field in the struct to check whether
+// it should be included in the hash.
+type Includable interface {
+	HashInclude(field string, v interface{}) (bool, error)
+}
+
+// IncludableMap is an interface that can optionally be implemented by
+// a struct. It will be called when a map-type field is found to ask the
+// struct if the map item should be included in the hash.
+type IncludableMap interface {
+	HashIncludeMap(field string, k, v interface{}) (bool, error)
+}
+
+// Hashable is an interface that can optionally be implemented by a struct
+// to override the hash value. This value will override the hash value for
+// the entire struct. Entries in the struct will not be hashed.
+type Hashable interface {
+	Hash() (uint64, error)
+}