absence of VSAN Storage Policy

##### ISSUE TYPE

* Bug Report

##### COMPONENT NAME

Categorize the issue, UI

##### CLOUDSTACK VERSION
4.17.2

##### CONFIGURATION
Vmware Hypervisor

##### OS / ENVIRONMENT
Ubuntu 20.04

##### SUMMARY
After Create VSAN Storage Policy In Vmware Vcenter, Cloudstack can not Import it and i dont have it in Adding Disk Offering in part of VMWAre Storage policy. It definitely needs to be imported via the API first before I can view it.

##### STEPS TO REPRODUCE
Add VSAN Storage Policy In Vcenter
Add Disk Offering In CLoudstack

##### EXPECTED RESULTS
i want to view That Storage Policy while adding Disk Offering

##### ACTUAL RESULTS
i cant view it in Cloudstack UI

首先复现所描述的 VMware vCenter VSAN 存储策略流程：创建策略，然后通过 UI 添加 CloudStack 磁盘方案。跟踪 API 和 UI 对 VMware 存储策略的处理，并将导入的策略与创建磁盘方案时显示的策略进行比较。当 VSAN 策略无需单独手动通过 API 导入即可在该 UI 中使用时，即表示完成。

由索引模型根据 Issue 内容生成。