Piotr Tabor a7f340216d Reformat code according to 'gotip' rules.
In practices adds annotations in the new syntax:
```
+//go:build !linux
 // +build !linux
```

Fixes failing gotip PASSES='fmt' check:
https://travis-ci.com/github/etcd-io/etcd/jobs/486453806
2021-02-26 10:14:46 +01:00
..