bug: env PROCESSOR_ARCHITECTURE does not exist on Linux

[matt-FFFFFF]

ALZ-PowerShell-Module/src/ALZ/Private/Get-HCLParserTool.ps1

Line 23 in 6c6953c

$architecture = $($env:PROCESSOR_ARCHITECTURE).ToLower()

[matt-FFFFFF]

Maybe use uname -i to receive x86_64

[jtracey93]

#71 related

cc: @oZakari & @jaredfholgate