fix: network list --zone completion (#367)

Author: scop

internal/commands/network/list.go

@@ -2,7 +2,9 @@ package network
 
 import (
 	"github.com/UpCloudLtd/upcloud-cli/v3/internal/commands"
+	"github.com/UpCloudLtd/upcloud-cli/v3/internal/completion"
 	"github.com/UpCloudLtd/upcloud-cli/v3/internal/config"
+	"github.com/UpCloudLtd/upcloud-cli/v3/internal/namedargs"
 	"github.com/UpCloudLtd/upcloud-cli/v3/internal/output"
 	"github.com/UpCloudLtd/upcloud-cli/v3/internal/ui"
 
@@ -50,6 +52,10 @@ func (s *listCommand) InitCommand() {
 	s.AddFlags(flags)
 }
 
+func (s *listCommand) InitCommandWithConfig(cfg *config.Config) {
+	commands.Must(s.Cobra().RegisterFlagCompletionFunc("zone", namedargs.CompletionFunc(completion.Zone{}, cfg)))
+}
+
 // ExecuteWithoutArguments implements commands.NoArgumentCommand
 func (s *listCommand) ExecuteWithoutArguments(exec commands.Executor) (output.Output, error) {
 	svc := exec.Network()