sqlvm-alwayson-cluster failed to deploy

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[sqlvm-alwayson-cluster](https://github.com/Azure/azure-quickstart-templates/tree/master/sqlvm-alwayson-cluster)

### Issue Details
This template can never deploy because there is obvious issue.
1. You had added a suffix in the virtual network name, but when specifying the values for variables "staticSubnetRef", "sqlSubnetRef", you are still using the original virtual network name without suffix. (AzureDeploy.json line 421, 422)
2. In the provisioningVMx.json, when creating availability set for sql VMs, you had specified "platformFaultDomainCount" as 3, but for some locations, only supports 2.

Inspect AzureDeploy.json lines 421-422 and provisioningVMx.json, then review how the virtual network name and availability-set fault-domain count are used. Validate the template in the affected Azure locations and confirm that sqlvm-alwayson-cluster deploys successfully where two fault domains are supported.

Written by the indexing model from the issue text.