add golangci-lint linter (#5499)

plugin/template/setup.go

@@ -32,7 +32,6 @@ func templateParse(c *caddy.Controller) (handler Handler, err error) {
 	handler.Templates = make([]template, 0)
 
 	for c.Next() {
-
 		if !c.NextArg() {
 			return handler, c.ArgErr()
 		}

plugin/template/setup_test.go

@@ -24,7 +24,6 @@ func TestSetup(t *testing.T) {
 }
 
 func TestSetupParse(t *testing.T) {
-
 	serverBlockKeys := []string{"domain.com.:8053", "dynamic.domain.com.:8053"}
 
 	tests := []struct {