Adding ApplianceName as optional input parameter to the Get-AzMigDiscoveredVMwareVMs command

[rohan-dassani]

If Appliance name is passed get data only for that appliance
-- Get-AzMigDiscoveredVMwareVMs -ResourceGroupName "testgroup" -ProjectName "depmape2e" -ApplianceName "myappliance" -OutputCsvFile "specificappliance.csv"

If Appliance name is not passed , get data for all appliances in that project
-- Get-AzMigDiscoveredVMwareVMs -ResourceGroupName "testgroup" -ProjectName "depmape2e" -OutputCsvFile "allappliance.csv"

Fixes #392

Description

Checklist

• This pull request was tested on both of:
  • PowerShell 5.1 (Windows)
  • PowerShell 6.x
  • PowerShell 7.x (Latest PowerShell)
• Scripts do not contain static passwords or other secret tokens.
• All Azure resource identifiers which must be universally unique are guaranteed to be so.

Testing information

Platform and PowerShell version: [pscustomobject]$PSVersionTable | Select-Object OS, BuildVersion, PSVersion

Az version: (Get-InstalledModule -Name Az).Version

[mikefrobbins]

LGTM