s3 cache client-side support

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

vendor/github.com/aws/aws-sdk-go-v2/internal/ini/errors.go

@@ -0,0 +1,22 @@
+package ini
+
+import "fmt"
+
+// UnableToReadFile is an error indicating that a ini file could not be read
+type UnableToReadFile struct {
+	Err error
+}
+
+// Error returns an error message and the underlying error message if present
+func (e *UnableToReadFile) Error() string {
+	base := "unable to read file"
+	if e.Err == nil {
+		return base
+	}
+	return fmt.Sprintf("%s: %v", base, e.Err)
+}
+
+// Unwrap returns the underlying error
+func (e *UnableToReadFile) Unwrap() error {
+	return e.Err
+}