Sync-FlashArrayHosts should have -WhatIf and -Confirm:$true/$false switches added

[mikenelson-io]

This cmdlet should be able to show what would happen if the user ran this cmdlet against two arrays but not actually do the operation without confirmation. Without confirmation, a user could potentially inadvertently overwrite the target array configuration.

[barkz]

Implement Write-Warning noting destructive operation with confirm.