e0d971daa6
When `-s` is not specified, there is no need to ask if there is a plugin with the specified name. This speeds up unit tests dramatically since they don't need to wait the timeout period for each call to `graphdriver.New`. Signed-off-by: Brian Goff <cpuguy83@gmail.com> Upstream-commit: 3b16cb15b496edc3dc080560c7189e06e19c5343 Component: engine