Bump init and containerd package to v1.0.0-beta.1

golint on pkg/init now complains:

    golint...
    ./init.go:199:2: redundant if ...; err != nil check, just return error instead.

Resulting in a change which doesn't seem like an improvement to me.

Signed-off-by: Ian Campbell <ijc@docker.com>

pkg/init/cmd/init/init.go

@@ -196,11 +196,7 @@ func copyFS(newRoot string) error {
 	}
 
 	// chdir to "/" to fix up . and ..
-	if err := os.Chdir("/"); err != nil {
-		return err
-	}
-
-	return nil
+	return os.Chdir("/")
 }
 
 func main() {