fix: gw validation

Signed-off-by: nabil salah <nabil.salah203@gmail.com>

Author: Nabil-Salah

pkg/gridtypes/zos/gw.go

@@ -105,9 +105,9 @@ func (g GatewayBase) Valid(getter gridtypes.WorkloadGetter) error {
 		return fmt.Errorf("backends list can not be empty")
 	}
 
-	if len(g.Backends) != 1 {
-		return fmt.Errorf("only one backend is supported")
-	}
+	// if len(g.Backends) != 1 {
+	// 	return fmt.Errorf("only one backend is supported")
+	// }
 
 	for _, backend := range g.Backends {
 		if err := backend.Valid(g.TLSPassthrough); err != nil {