update all +build statements (#5271)

* update all +build statements
Signed-off-by: MQasimSarfraz <syed.qasim.sarfraz@gmail.com>

* remove old +build style
Signed-off-by: MQasimSarfraz <syed.qasim.sarfraz@gmail.com>

directives_generate.go

-//+build ignore
+//go:build ignore
 
 package main
 

owners_generate.go

-//+build ignore
+//go:build ignore
 
 // generates plugin/chaos/zowners.go.
 

plugin/cache/fuzz.go

-// +build gofuzz
+//go:build gofuzz
 
 package cache
 

plugin/chaos/fuzz.go

-// +build gofuzz
+//go:build gofuzz
 
 package chaos
 

plugin/etcd/cname_test.go

-// +build etcd
+//go:build etcd
 
 package etcd
 

plugin/etcd/group_test.go

-// +build etcd
+//go:build etcd
 
 package etcd
 

plugin/etcd/lookup_test.go

-// +build etcd
+//go:build etcd
 
 package etcd
 

plugin/etcd/multi_test.go

-// +build etcd
+//go:build etcd
 
 package etcd
 

plugin/etcd/other_test.go

-// +build etcd
+//go:build etcd
 
 // tests mx and txt records
 

plugin/etcd/setup_test.go

-// +build etcd
+//go:build etcd
 
 package etcd
 

plugin/file/fuzz.go

-// +build gofuzz
+//go:build gofuzz
 
 package file
 

plugin/forward/fuzz.go

-// +build gofuzz
+//go:build gofuzz
 
 package forward
 

plugin/pkg/reuseport/listen_no_reuseport.go

-// +build !go1.11 !aix,!darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd
+//go:build !go1.11 || (!aix && !darwin && !dragonfly && !freebsd && !linux && !netbsd && !openbsd)
 
 package reuseport
 

plugin/pkg/reuseport/listen_reuseport.go

-// +build go1.11
-// +build aix darwin dragonfly freebsd linux netbsd openbsd
+//go:build go1.11 && (aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd)
 
 package reuseport
 

plugin/rewrite/fuzz.go

-// +build gofuzz
+//go:build gofuzz
 
 package rewrite
 

plugin/whoami/fuzz.go

-// +build gofuzz
+//go:build gofuzz
 
 package whoami
 

test/etcd_cache_test.go

-// +build etcd
+//go:build etcd
 
 package test
 

test/etcd_credentials_test.go

-// +build etcd
+//go:build etcd
 
 package test
 

test/etcd_test.go

-// +build etcd
+//go:build etcd
 
 package test
 

test/fuzz_corefile.go

-// +build gofuzz
+//go:build gofuzz
 
 package test