Fix various golangci-lint errors (#2059)

pkg/argparser/args.go

@@ -2,8 +2,9 @@ package argparser
 
 import (
 	"fmt"
-	"github.com/roboll/helmfile/pkg/state"
 	"strings"
+
+	"github.com/roboll/helmfile/pkg/state"
 )
 
 type keyVal struct {
@@ -95,10 +96,9 @@ func GetArgs(args string, state *state.HelmState) []string {
 					argArr = append(argArr, fmt.Sprintf("%s=%s", obj.key, obj.val))
 				}
 			} else {
-				argArr = append(argArr, fmt.Sprintf("%s", obj.key))
+				argArr = append(argArr, obj.key)
 			}
 		}
-
 	}
 
 	state.HelmDefaults.Args = argArr

pkg/argparser/args_test.go

@@ -1,9 +1,10 @@
 package argparser
 
 import (
-	"github.com/roboll/helmfile/pkg/state"
 	"strings"
 	"testing"
+
+	"github.com/roboll/helmfile/pkg/state"
 )
 
 func TestGetArgs(t *testing.T) {
@@ -44,10 +45,5 @@ func Test2(t *testing.T) {
 }
 
 func compareArgs(expectedArgs string, args []string) bool {
-
-	if strings.Compare(strings.Join(args, " "), expectedArgs) != 0 {
-		return false
-	}
-	return true
-
+	return strings.Compare(strings.Join(args, " "), expectedArgs) == 0
 }