selector: use custom domain (#1760)

* util/wrapper: improve auth errors

* client: add network call option

* client/selector: add domain select option

* client/grpc: pass network option to selector

client/selector/options.go

@@ -21,6 +21,7 @@ type Options struct {
 type SelectOptions struct {
 	Filters  []Filter
 	Strategy Strategy
+	Domain   string
 
 	// Other options for implementations of the interface
 	// can be stored in a context
@@ -68,3 +69,10 @@ func WithStrategy(fn Strategy) SelectOption {
 		o.Strategy = fn
 	}
 }
+
+// WithDomain sets the registry domain to use for the selection
+func WithDomain(d string) SelectOption {
+	return func(o *SelectOptions) {
+		o.Domain = d
+	}
+}