Merge pull request #420 from stevvooe/expose-drivernames

Expose storage driver names for tracing

docs/storage/driver/s3/s3.go

@@ -261,6 +261,10 @@ func New(params DriverParameters) (*Driver, error) {
 
 // Implement the storagedriver.StorageDriver interface
 
+func (d *driver) Name() string {
+	return driverName
+}
+
 // GetContent retrieves the content stored at "path" as a []byte.
 func (d *driver) GetContent(path string) ([]byte, error) {
 	content, err := d.Bucket.Get(d.s3Path(path))