config: nitpicks from #10475

/cc @grubernaut - we put stdlibs above 3rd party libs separated by a
space

config/interpolate_funcs.go

@@ -15,13 +15,13 @@ import (
 	"sort"
 	"strconv"
 	"strings"
+	"time"
 
 	"github.com/apparentlymart/go-cidr/cidr"
 	"github.com/hashicorp/go-uuid"
 	"github.com/hashicorp/hil"
 	"github.com/hashicorp/hil/ast"
 	"github.com/mitchellh/go-homedir"
-	"time"
 )
 
 // stringSliceToVariableValue converts a string slice into the value

config/interpolate_funcs_test.go

@@ -6,10 +6,10 @@ import (
 	"os"
 	"reflect"
 	"testing"
+	"time"
 
 	"github.com/hashicorp/hil"
 	"github.com/hashicorp/hil/ast"
-	"time"
 )
 
 func TestInterpolateFuncZipMap(t *testing.T) {