Import the security module for access check

The 7.3.0 release of powershell cleaned up some stray things that
should require the import of the security module to be available.
It causes issues with pre-7.3 versions of powershell that attempt
to load the newer module so we run a check and restrict the module
version based on the powershell version.

plugins/providers/hyperv/scripts/utils/VagrantVM/VagrantVM.psm1

@@ -1,6 +1,21 @@
 # Always stop when errors are encountered unless instructed not to
 $ErrorActionPreference = "Stop"
 
+# Check the version of Powershell currently in use. If it's
+# under 7.3.0 we need to restrict the maximum version of the
+# security module to prevent errors.
+# Source: https://github.com/PowerShell/PowerShell/issues/18530
+$checkVersion = $PSVersionTable.PSVersion
+if($checkVersion -eq "") {
+    $checkVersion = $(Get-Host).Version
+}
+
+if([System.Version]$checkVersion -lt [System.Version]"7.3.0") {
+    Import-Module Microsoft.Powershell.Security -MaximumVersion 3.0.0.0
+} else {
+    Import-Module Microsoft.Powershell.Security
+}
+
 # Vagrant VM creation functions
 
 function New-VagrantVM {