Use gofumpt to format code

gofumpt (mvdan.cc/gofumpt) is a fork of gofmt with stricter rules.

Brought to you by

	git ls-files \*.go | grep -v ^vendor/ | xargs gofumpt -s -w

Looking at the diff, all these changes make sense.

Also, replace gofmt with gofumpt in golangci.yml.

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>

libcontainer/intelrdt/monitoring_test.go

@@ -26,7 +26,6 @@ func TestParseMonFeatures(t *testing.T) {
 
 	t.Run("No features available", func(t *testing.T) {
 		parsedMonFeatures, err := parseMonFeatures(strings.NewReader(""))
-
 		if err != nil {
 			t.Errorf("Error while parsing mon features err = %v", err)
 		}