new: [vps] explicit requirement upon ``zip`` command

bin/vps

@@ -1684,6 +1684,7 @@ cmdline.spec:odoo:cmd:restore:run() {
 
     local out
 
+    depends zip
     odoo_service="${opt_service:-odoo}"
 
     if [[ "$ZIP_DUMP_LOCATION" == "http://"* ]] ||
@@ -1777,6 +1778,7 @@ cmdline.spec:odoo:cmd:dump:run() {
 
     odoo_service="${opt_service:-odoo}"
 
+    depends zip
 
     msg_dbname=default
     [ -n "$opt_database" ] && msg_dbname="'$opt_database'"