Log error and continue if nat settings file cannot be loaded

If the nat settings cannot be loaded from file, relocate the file
and continue with cleared settings. Log the original error along
with the relocation path for inspection.

go_src/vagrant-vmware-utility/settings/nat.go

@@ -7,7 +7,6 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path"
 	"sync"
@@ -110,14 +109,20 @@ func (n *NAT) Reload() error {
 		return nil
 	}
 	var info NatInfo
-	data, err := ioutil.ReadFile(n.Path)
+	data, err := os.ReadFile(n.Path)
 	if err != nil {
 		n.logger.Error("failed to read nat file", "error", err, "path", n.Path)
 		return err
 	}
 	if err := json.Unmarshal(data, &info); err != nil {
 		n.logger.Error("failed to load nat data", "error", err)
-		return err
+		if renameErr := os.Rename(n.Path, n.Path+".invalid"); renameErr != nil {
+			n.logger.Error("failed to move invalid nat settings file", "error", renameErr)
+			return err
+		}
+		n.logger.Warn("moved invalid nat settings file, clearing", "invalid-path", n.Path+".invalid")
+
+		return nil
 	}
 	n.info = info
 	return nil
@@ -137,7 +142,7 @@ func (n *NAT) Save() error {
 		n.logger.Error("failed to dump nat data", "error", err)
 		return err
 	}
-	f, err := ioutil.TempFile(path.Dir(n.Path), "nat")
+	f, err := os.CreateTemp(path.Dir(n.Path), "nat")
 	if err != nil {
 		n.logger.Error("failed to create file", "error", err, "path", f.Name())
 		return err