Longer delay for network to catch up

Author: fkorotkov

templates/mojave-base.json

@@ -6,7 +6,8 @@
       "installer_app": "/Applications/Install macOS Mojave.app/",
       "cpu_count": "2",
       "ram_size": "4G",
-      "disk_size": "80G"
+      "disk_size": "80G",
+      "boot_delay": "30s"
     }
   ],
   "provisioners": [